6 Checkpoints to Reduce Wobble When Setting Up a Total Station Tripod

In surveying with optical surveying instruments, not only the performance of the instrument itself and the skill of the operator, but also the condition of the tripod installation affects the stability of the measurement results. No matter how carefully you sight, if the tripod sinks, twists, sways in the wind, or the legs are not tightened securely, readings of horizontal angles, vertical angles, and distances can become unstable. This is especially true on sites such as civil engineering works, land development, paving, exterior construction, and solar power plant installations, where ground conditions and working environments are not uniform, so it is important to make it a habit to check the tripod setup.

This article outlines six on-site checks to reduce wobble when mounting a total station on a tripod. It explains a practical, easy-to-follow sequence for field personnel — from how to assess the ground before setting the instrument, to how far to open the tripod legs, securing the tripod spikes, checking the leg locks, and rechecking after installation.

Table of Contents

• The wobble of a total station begins with the tripod setup.

• Checkpoint 1: Assess the ground's hardness and susceptibility to settlement first

• Check Point 2: Open the tripod legs evenly to stabilize the center of gravity

• Checkpoint 3: Make sure the tip is firmly engaged to prevent slippage at the base of the legs.

• Checkpoint 4: Check the leg locks and mounting points for any looseness every time.

• Checkpoint 5 Reduce sources of vibration during setup and observation

• Checkpoint 6 Perform re-alignment and rear-view verification after installation

• Make checking the tripod setup a site rule to stabilize survey quality.

The Wobble of a Total Station Begins with Tripod Setup

An optical surveying instrument determines positions by combining angles and distances. Because work proceeds by precisely sighting survey points and checking their relationships with known points and backsights, it is assumed that the instrument body is stable. If the tripod shifts even slightly, the orientation of the line of sight and the position of the instrument point can change, leading to measurement variability and coordinate shifts.

Variations that occur on site include not only large, visible swaying but also small changes that are difficult for operators to notice. For example, even if the instrument is level immediately after setup, as observations continue the legs may sink slightly into the ground and the bubble can shift without being noticed. Also, even when you think you have placed it on a paved surface, there may be sand or fine gravel on top and the feet can slip. On slopes or newly developed ground the footing itself can be soft, and even if you think you have tamped the tripod down, it may settle after a delay.

To reduce shake in an optical surveying instrument, it is not sufficient to simply set the instrument body down and then make adjustments. Before erecting the tripod, you need to check where to place it, which direction to spread the legs, whether the feet will move, and whether there are vibration sources nearby. The tripod is not merely a support but the foundational part for maintaining surveying accuracy. In surveying, if the tripod setup is disturbed, subsequent leveling and sighting work will become unstable.

Especially on sites using optical surveying instruments, crews sometimes rush tripod setup to prioritize work efficiency. When there are many survey points, frequent relocations, or limited time due to coordination with other tasks, they inevitably want to complete the setup quickly. However, skipping confirmation of the setup can later require re-measurement or coordinate checks, resulting in increased rework. Stabilizing the tripod at the initial stage is important for preserving the efficiency of the overall observation.

Moreover, the quality of a tripod setup is not something that only experienced people can judge by feel. If you break the inspection into items such as the ground, leg spread, leg feet, tightening, vibration, and re-checking, even less experienced personnel can more easily maintain a consistent level of quality. Conditions vary from site to site, but if you decide on the points to check, you can more easily reduce setup errors and missed inspections.

The six checkpoints introduced here are not so much about adding extra special tasks as they are a way of breaking down routine setup operations a little more carefully. To use a total station reliably, let's review the basics of tripod setup from an on-site perspective.

Checkpoint 1: First assess the ground's stiffness and susceptibility to settlement

The first thing you should check when setting up a tripod is the condition of the ground where the tripod will be placed. Wobble of the total station can be caused not only by problems with tightening the legs or leveling, but also by the instability of the site itself. On ground that is soft, where surface gravel is loose, where there is mud, close to the shoulder of a slope, or where backfill has been placed very recently and is weakly compacted, the tripod legs may move during observation.

The first thing to check is whether each of the tripod’s three legs can make stable contact with the ground. Even in places that look level, one leg may be on soft soil while another sits on hard pavement, which leads to differences in how much they sink. If the sinking isn’t uniform, the entire instrument will slowly tilt and leveling will become unstable. Simply pressing the ground lightly with your foot before setting the tripod down to avoid spots that sink excessively or where the surface will crumble can change the stability after installation.

On soil sites, extra caution is required after rainfall or after sprinkling. Even if the surface looks dry, if moisture remains inside, the tripod may seem stable right after being set up but the legs can gradually sink under the weight of the equipment or the movement of the operator. On development sites and around excavations, be careful at the boundary between natural ground and backfilled areas. Where the color or degree of compaction looks different, choose the firmer, more tightly compacted side whenever possible, or find a spot where the legs will be evenly and stably supported.

On crushed stone or gravel, tripod feet tend to end up merely resting on top of the rocks. In this condition, rocks can roll or the feet can drop into gaps during observation, causing slight shifts. Before placing the tripod, remove large loose stones and unstable particles from the spots where the feet will sit, and ensure the feet make firm contact with the ground. Simply stamping down hard can actually make the feet slip, so adjust according to the ground conditions.

On paved or concrete surfaces, sinking is minimal, but caution is needed regarding the tripod feet slipping. In particular, when the surface is wet, covered with dust or sand, or sloped, the spikes may not grip sufficiently and could move laterally. Because on paved surfaces the feet bear the load at points, after setup it's reassuring to lightly push the entire tripod to check that the feet don't slip. If necessary, fine‑tune the positions of the feet for stability and choose locations that are less likely to be affected by foot traffic or machinery vibration.

On slopes and inclined ground, trying to level the tripod only by adjusting the leg lengths can cause the tripod’s overall center of gravity to become unbalanced. On an incline, the downhill leg tends to take more load while the uphill leg may lift slightly. If you begin observations in this state, the tripod can twist or move when someone walks nearby or when it is exposed to wind. On inclined ground, simply changing the tripod’s placement slightly can improve stability. Rather than forcing it onto a single point, it is important to find a stable footing while meeting the instrument point conditions.

When checking ground conditions, you need to consider safety as well as surveying convenience. Edges of excavations, the swing radius of heavy machinery, areas near material storage, and the center of passageways are places where a tripod is likely to be subject to contact or vibration. Even if a spot is convenient as an instrument station, if there is a high chance the tripod will be moved by nearby work, it will be difficult to maintain observation stability. An optical total station is precision equipment, and if the tripod is knocked over it can lead to equipment damage or a work stoppage. Along with the ground’s hardness, it is important to choose the installation location by assessing the surrounding work environment.

Checking the ground becomes something you can judge quickly once you get used to it. If you make a habit of looking at your feet before spreading the tripod, stepping on the ground to check it, thinking about the planned positions of the tripod legs, and observing the surrounding movement patterns, you can more easily reduce wobble after setup. Stable observations with a total station begin with selecting the ground before placing the instrument.

Checkpoint 2: Open the tripod legs evenly to stabilize the center of gravity

How far you spread the tripod legs is a basic check point that affects the stability of an optical surveying instrument. If you raise it high without spreading the legs sufficiently, the center of gravity rises, making it unstable against wind or contact. Conversely, spreading the legs too wide not only takes up excessive workspace but can make the leg angles and height adjustments awkward, making setup and leveling difficult. The important thing is to position it so that the load is balanced across the three legs and the instrument’s center of gravity falls near the center of the tripod.

When setting up a tripod, first spread the three legs at similar angles and roughly align it so the center comes over the instrument point. If you need to place the instrument directly above the instrument point, adjust the tripod’s spread and position simultaneously while maintaining a comfortable, unstrained posture. If one leg is opened much wider than the others or one leg is noticeably more vertical, the load will be unevenly distributed and it will be more prone to sway during observations.

Pay attention to height as well. In some situations the higher you set up an optical surveying instrument, the easier it is to secure a line of sight, but at the same time it becomes more prone to sway. Especially on windy days or in locations where you must extend the tripod legs significantly, not raising it higher than necessary contributes to stability. Decide the height while balancing a height the observer can look through without strain, a height that is easy to operate at, and a height that avoids surrounding obstacles. Raising it does not necessarily make the work easier; it is important to balance stability and sighting.

Tripod legs are parts that tend to differ in how far they are extended. On flat ground you can use the three legs at roughly the same length, but on slopes or uneven surfaces you adjust by changing the lengths of the legs. If you extend just one leg much more than the others, that leg can become prone to flexing and the locking mechanisms can be put under strain. When setting up, adjust the tripod body's position and orientation so that none of the three legs are unduly strained.

The orientation of the legs is also important on site. On a slope, pointing one leg firmly downhill can sometimes improve stability. Near walkways or work paths, you need to orient the legs so they won’t catch people’s feet. Also consider where the person operating the instrument will stand; arranging the tripod so observers are less likely to bump its legs with their body or feet makes it easier to prevent shake caused by contact during work.

Also check the positional relationship between the tripod center and the total station. When you place the instrument on the tripod, if the leveling base or the instrument body is leaning in an awkward direction, there will be little room for adjustment. Even when performing centering work, if the tripod is significantly out of position, the leveling base will have to compensate excessively, which can result in the instrument assuming an unstable attitude. If you align the center to some extent when you set the tripod, the subsequent leveling will proceed smoothly.

Before mounting an optical surveying instrument on the tripod, check that the top plate of the tripod is not extremely tilted. Although you can adjust the level with the leveling base, if the tripod top plate is greatly tilted you will have to use a large portion of the leveling screws’ adjustment range. If you force the instrument to be level when the screws are near the end of their range, it becomes difficult to re-adjust and the bubble can easily shift with a small movement. Bringing the tripod top plate as close to level as possible during the tripod setup leads to more stable leveling.

The task of spreading the tripod legs evenly may look simple, but it can actually make a surprising difference. The more experienced operators do it unconsciously, while less experienced ones often focus so much on aligning the instrument station that they overlook the angles of the legs and the center of gravity. On site, stepping back to look at the entire tripod before mounting the total station makes it easier to notice any bias in how the legs are spread. It is also effective to check the balance of height and tilt from the side, not just from directly above.

A stable tripod setup also looks natural. Aim for the three legs to spread at a natural angle, the feet to grip the ground firmly, and the top plate not to be noticeably tilted. If the tripod is stable at this stage before mounting equipment, the subsequent tasks of leveling, sighting, and recording can be carried out more calmly and easily.

Check Point 3: Make sure the tip is firmly engaged to prevent the legs from slipping at the base

The spike feet at the ends of a tripod’s legs are an important part for biting into the ground and stabilizing contact. To reduce vibration of an optical surveying instrument, you must confirm that the spikes are firmly engaged with the ground. Even if the leg angles and heights are correct, the tripod as a whole cannot remain stable if the leg tips slip, lift off, roll, or sink.

When installing on soil, the tripod spikes should be lightly embedded into the ground. If you simply place them, the tripod feet can slip during observation. Especially on dry topsoil or soft soil, only the surface may crumble and the feet can move easily. After setting up the tripod, lightly press down near each leg with your foot to confirm that the spikes are gripping the ground. However, be careful not to press too hard, as this can change the position of the legs or tilt the entire tripod; perform this gently so as not to affect the instrument point position or the leveling condition.

On crushed stone, a tripod leg tip will be stable if it fits well between the stones, but it is unstable if it is merely resting on top of a large stone. If a leg tip sits on a rounded stone, it can roll with little force. Before setting up the tripod, check the position of the leg tips and, if necessary, avoid unstable stones. Instead of forcing the leg tips by screwing them in, look for a position where they will sit securely and work effectively.

On paved or concrete surfaces, because the spikes cannot bite into the ground, the main concern is checking for slip resistance. If there is sand, mud, water, oil, or fine dust on the surface, the spikes are more likely to slip. Especially on sloped paved surfaces, even if a tripod is stable immediately after being set up, the leg tips can gradually move due to handling during observation or from wind. After setting up, lightly press the tripod head to check whether the leg tips slip. If you sense any movement, change the position or find a spot where the feet are stable.

Even when working indoors or on floor surfaces, checking the leg tips is essential. Depending on the flooring, the spike tips can be slippery, and you may also need to take care not to scratch the surface. Choose an appropriate method according to site rules, considering both the stability of the surveying equipment and protection of the floor. Working on floors involves less sinking but tends to cause slipperiness issues, so it is important not to overlook the condition of the feet.

You should check that the spikes at the ends of all three legs are gripping equally. Even if only one is weaker, the tripod can twist or move toward that direction. When the observer operates the equipment, rotates the telescope, or touches the leveling screws, a slightly slipping weak leg will change the line of sight. This shift may not immediately appear as a large error. That is precisely why it is important to check each leg base one by one before observation.

Also, you should check the condition of the tripod tip itself. If the tip is severely worn, bent, caked with mud, or the components at the leg ends are loose, it will not grip the ground effectively. Tripods are equipment intended for long-term use and often get covered with mud and sand on-site, so neglecting to clean and inspect the feet can reduce stability. In addition to inspecting the surveying instrument itself, include the tripod feet in your routine checks for peace of mind.

When using the tripod spikes, it's also important not to shift the instrument point. If you move the tripod feet significantly after you've centered, the instrument point will be displaced. For that reason, it's generally best to stabilize the tripod feet once the tripod is roughly positioned, then mount the instrument and refine centering and leveling. If you notice instability at the base after setup, rather than forcing adjustments on the spot, it can often be more reliable to redo the setup from scratch.

On site, if you skip checking the tripod's footing, you may later be troubled by measurement variability whose cause is hard to determine. Before suspecting instrument malfunctions or sighting errors, it's important to check whether the tripod's spikes were securely engaged. If the tripod's base is stable, it's easier to obtain consistent performance from the total station.

Checkpoint 4: Check the leg locks and mounting points for looseness every time

One thing that's easy to overlook when setting up a tripod is loose leg locks or mounting connections. After extending the tripod legs to adjust the height, if you place the optical surveying instrument on it with the locks not fully tightened, the legs can gradually sink or shift due to vibration during observation. Even if there appears to be no visible problem, insufficient tightening of the locks can cause the leveling to be disturbed.

Leg locks come in designs such as screw-type and lever-type, and in any case it is important to check by hand that they are securely fastened. Even if you think you have locked them, they may have stopped partway or sand or mud may be caught so they are not tightened enough. Especially when you set up in a hurry or are working with gloves on, the feeling of having tightened them can be ambiguous. After setting up the tripod, check each of the three legs in turn to make sure the locking mechanisms are securely fixed.

If the leg locks are loose, the weight of the total station can cause the legs to sink gradually. Even slight sinking changes the overall tilt of the tripod and causes the leveling bubble to shift. If you notice the bubble shift during observation you can correct it, but if you continue measuring without noticing, inconsistencies may appear in the measured values later. Ensuring the leg locks are securely fastened is especially important when working at the same instrument point for a long time or when observing many survey points consecutively.

The part where the total station is attached to the tripod is also something you should check every time. If the tripod's top plate and the tribrach, or the instrument mounting section, are not securely tightened, the instrument body can rotate slightly or wobble. Mounting screws should not simply be tightened as hard as possible, but they must be free of any looseness. After placing the instrument, check the fixed condition within a reasonable range and look for any play.

Be careful if sand or mud is present on the tripod's top plate. If foreign matter is trapped on the contact surface, the equipment will not sit properly and this can cause a minor wobble. On site, tripods may be placed on the ground or get mud on them during transport, so briefly inspect the area around the top plate before placing the equipment. If cleaning is necessary, remove debris with a dry cloth and ensure the top plate is in a condition that allows stable mounting.

Looseness in the telescoping sections of a tripod’s legs can also cause camera shake. On tripods that have been used for a long time, the leg joints and locks can wear, allowing slight movement even when tightened. When setting up a tripod on site, lightly shake the legs to check for any unusual play; this makes it easier to detect abnormalities. Using a tripod with significant looseness for work that requires precision can make measurement results unstable. If a pre-use inspection raises concerns, it may be necessary to refrain from using it.

In addition, how a tripod is carried and stored also affects loosening. Loading and unloading into vehicles, moving around the site, and contact with materials can place strain on the locking mechanisms and attachment points. Although tripods may look sturdy, they are tools that support precision instruments, and continued rough handling can reduce their clamping force and stability. Performing regular inspections and promptly considering maintenance or replacement if any abnormalities are found is important for ensuring surveying quality.

It is standard practice to check the leg locks and attachment points not only before starting observations but every time the instrument is re-set up. Because you extend and retract the legs each time you move the instrument point, just because there were no problems at the previous location does not mean the next one will be fine. After moving, ground conditions and height change, so you need to consciously reset and check each time.

As an on-site check procedure, it is effective to make a habit of the sequence: set up the tripod, set the leg lengths, tighten the leg locks, check the stability of the tripod head, place the instrument, check the mounting screws, and check for overall wobble. Performing this series of actions in the same order each time reduces the chance of missing a check. To reduce wobble of a total station, it is essential to securely fasten the tripod’s structural components.

Checkpoint 5 Reduce vibration sources during setup and observation

Even with the tripod set up stably, the optical surveying instrument can wobble due to vibrations in the surroundings or contact during work. During leveling and observation, attention is needed not only for the instrument itself but also for the tripod’s surrounding environment. Reducing sources of vibration makes it easier to maintain sighting stability and the reproducibility of measurements.

First, pay attention to the operator’s own movements. Actions such as catching a foot on a tripod leg, the body touching the tripod during operation, or hanging recording tools or radios on the tripod can cause vibration. The tripod is meant to support the optical surveying instrument and should not be used as a hook for gear or as a support. When observers or assistants move near the tripod, they should be aware of the leg positions and ensure their path avoids contact.

During leveling, pay attention to the force you apply to the leveling screws. If you turn the screws too hard or operate as if pushing the instrument body, the tripod may shift slightly. Leveling is not a process of forcing things into position, but of making small adjustments while checking the bubble and the display. If the tripod is stable, you can achieve level with light movements. If adjustments are difficult unless you use strong force, review possible causes such as the tripod top plate being significantly tilted, the legs being poorly positioned, or the leveling base’s adjustment range being uneven.

Vibrations from nearby heavy machinery and vehicles are also important. At roadworks and site development work, the ground can shake just from a vehicle passing nearby. If compaction equipment, excavators, or transport vehicles are operating nearby, measurement readings can become unstable even if the tripod does not appear to be visibly shaking. It is necessary to take measures to optimize observation conditions, such as avoiding times of heavy vibration, keeping distance from work machines, and setting up away from vehicle routes.

The effects of wind cannot be ignored. The total station and its tripod are exposed to the wind. In particular, when the tripod is extended high, wind-induced sway increases. In open development sites, along rivers, near bridges, on elevated ground, and in locations such as solar power plants where there is little to block the wind, pay attention to wind direction and gusts. Improve stability as much as possible: avoid setting up higher than necessary, spread the tripod legs firmly, and choose your standing position with regard to the direction from which the wind is likely to hit. If the wind is strong and sighting or measurements are unstable, do not force the work to continue; consider reassessing the observation conditions.

When observing on scaffolding or temporary platforms, vibrations from walking and work are more easily transmitted to the tripod. On floors or scaffold decks that flex, the equipment can move just from someone walking nearby. In such locations, it is effective to choose a position with as little foot traffic as possible and to ask people nearby to temporarily reduce movement to lessen vibrations during observations. Because safety management is also important when surveying on scaffolding, set up while avoiding risks of falling or contact.

Pay attention to the placement of objects around the tripod. If materials, survey poles, tools, cables, protective coverings, etc. are touching the tripod legs, they can move in the wind or from people’s movements and transmit vibrations to the tripod. Also, if materials are at the base of the tripod legs, observers may adopt awkward postures to avoid them and are more likely to come into contact with the equipment. Once the tripod is set up, lightly tidy the surrounding area and leave some clearance around the legs.

To reduce vibration during observation, it’s not enough to be still only at the moment of measurement. The tripod needs to remain stable throughout the sequence of actions: centering, back-sight verification, sighting, ranging, recording, and turning toward the next point. When rotating the telescope or swiveling the equipment, applying too much force can transmit torsion to the tripod. Operate the equipment gently and avoid sudden movements.

Confirming potential sources of vibration is more effective when shared not only with the observer but with the entire site. Simply informing those nearby that surveying is in progress and asking them not to walk near the tripod can reduce the risk of contact or vibration. Especially on sites where multiple crews are working, it is important to share the location of the surveying instrument and coordinate or adjust it so it does not interfere with work routes.

When measurements from an optical surveying instrument are unstable, don’t immediately suspect only the instrument settings or aiming method; also check vibration sources around the tripod. The ground, wind, people, vehicles, scaffolding, or materials may be affecting it. Completely eliminating vibration is difficult, but knowing the causes makes it possible to reduce them. Creating a stable observation environment is the final step in setting up the tripod.

Checkpoint 6: Perform re-alignment and backsight verification after installation

After setting up the tripod, mounting the total station, and centering and leveling it, you may be tempted to start observations immediately. However, to reduce vibration, rechecking after setup is essential. The tripod must not only be stable at the moment it is set up; it also needs to be stable when you begin observing. The weight of the instrument, the legs being stepped on, securing the mounting, and the centering/leveling adjustments can cause slight changes from the initial state.

First, what you should do is recheck the leveling. After mounting the equipment and adjusting the centering and height, check that it is level using a bubble level or an electronic display. Even if you thought you had aligned it initially, tightening the mounting screws or pressing down on the feet can slightly change the tilt. By checking once more before starting observations, you can detect any drift in the leveling at an early stage.

For work that requires centering, also reconfirm that the instrument is set directly over the instrument point. While adjusting the tripod legs to achieve leveling, the position of the instrument can shift slightly. This is especially true in control point surveying and coordinate observations where the instrument point is clearly defined, as a centering error will affect the results. Leveling and centering should not be checked independently; it is important to refine both by mutually checking them.

Checking the backsight is also important. After setting up the total station, the process of sighting known points or backsight points to verify direction is an important step in establishing the reference for observations. If the tripod is unstable, the instrument can move after aligning the backsight, which may affect subsequent observation points. Confirm the backsight direction before starting observations and re-sight if necessary. Even during observations, it is reassuring to recheck the backsight after long periods of work, if the tripod may have been touched, if the wind picks up, or if there have been large vibrations nearby.

Re-leveling and backsight checks also serve as insurance against rework. If you notice an instrument shift after observing many survey points, it becomes difficult to determine from what point the error began to affect the measurements. As a result, you may have to remeasure a wide area. If you perform checks at key stages of the observations, you can more easily narrow down the affected range if a shift does occur. For example, deciding on check timings such as before starting work, after measuring a certain number of points, after a break, after work has been done around the instrument, or after a change in weather makes them easier to use in practice.

This is also related to checking instrument height and mirror height. If the tripod sinks, it can affect how instrument height is handled. Being aware of whether the instrument height measured immediately after setup has changed during observations is especially important for as-built verification and surveys that deal with elevations. If tripod settlement is suspected, you need to check not only the leveling but also the instrument height and its relationship to reference points.

Also, it is useful to record the results of rechecks. You do not need to document everything in detail, but briefly noting the time the backsight check was performed, whether re-levelling was carried out, that no abnormalities were found, and the reason for re-measurement will be helpful when verifying survey results later. On sites subject to public works or internal inspections, being able to explain not only the measurement results but also the conditions under which observations were made contributes to quality control.

Re-centering and backsight checks can feel like steps that slow the work. However, they are in fact an efficiency measure to detect misalignment early and minimize re-measurement. Especially when working with a total station, if the reference shifts even once it can affect all subsequent points. That is why it is important to verify after setup and to maintain the practice of checking at key stages during observation.

Those responsible for conducting stable surveys in the field carry out thorough post-setup checks. In the sequence of erecting the tripod, mounting the instrument, leveling, back-sighting, and observing, the practical key to reducing instability is not to rely on a single check.

Make verifying tripod setup an on-site rule to stabilize surveying quality.

To reduce wobble when setting up a tripod for a total station, it is important to consider six points: ground, leg spread, foot spikes, leg locks, vibration, and re-checking. Even if you carefully attend to only one of these, if unstable elements remain in the others, the observation results will be hard to stabilize. Tripod setup is the accumulation of many small checks, and that accumulation supports surveying quality.

In particular, conditions on site change every time. Dry paved surfaces, soil after rain, crushed stone, slopes, narrow passages, construction sites where heavy machinery is operating, and open locations exposed to wind — the conditions are not constant. Therefore, installing equipment exactly as before does not necessarily prevent problems. It is necessary to check the stability of the tripod for each site and for each instrument point.

If you rely solely on individual experience to verify tripod setup, quality is likely to vary depending on the person. What experienced staff check instinctively can be hard for less experienced personnel to notice. Therefore, by establishing the order of checks as an on-site rule, it becomes easier to maintain a consistent standard regardless of who performs the work. For example, standardize the sequence: inspect the ground before setup, open the legs evenly, ensure the spiked feet are engaged, check the locks by touch, look for nearby sources of vibration, and perform re-levelling and backsighting before observation.

Also, deciding on a verification procedure for when measurement values are unstable will speed up isolating the cause. By including not only sighting errors, mirror position, instrument settings, and coordinate data but also tripod settling, slipping of the tripod feet, loose locks, and any vibration in the checklist, you’re less likely to get confused on site. Surveying problems do not necessarily arise from a single cause. Because multiple small factors can combine to produce a deviation, a system that lets you return to the basics and perform checks is important.

The quality of the tripod setup affects not only the surveying results but also work efficiency. If the initial setup is stable, re-leveling and re-measurements are reduced, and handover to downstream processes proceeds smoothly. Conversely, if observations are carried out with an unstable tripod, you may spend a lot of time later checking figures, re-measuring, correcting reports, and explaining to stakeholders. A short on-site check can help prevent overall rework.

Total stations are used for a variety of tasks such as checking construction positions, as-built measurements, verifying reference points, stakeout, layout marking, and checking near boundaries. What is common to all these tasks is that if the position and orientation of the reference instrument are not stable, the reliability of the measurement results will decrease. Tripods are inconspicuous tools, but they play an important role as the foundation of surveying.

On future sites, it will be necessary not only to conduct observations with total stations but also to efficiently link the recording, sharing, and verification of survey data. By mastering the basics of tripod setup to reduce measurement deviations and establishing operational procedures that allow measurement conditions and verification results to be shared on site, it becomes easier to stabilize the overall quality of surveying work. Establishing the basic practice of securely setting the tripod as a site rule is the first step to using total stations with confidence.