5 Things to Check Before Renting a 3D Laser Scanner and RTK GNSS

Many practitioners considering renting 3D laser scanners and RTK GNSS do not want to purchase equipment; they face challenges such as wanting to use devices efficiently only for the necessary period, to assemble optimal equipment for short-term projects, and to change specifications for each site. In particular, for tasks like assessing current conditions before renovation, checking terrain at civil engineering sites, recording prior to equipment replacement, verifying as-built conditions, and acquiring point clouds of existing structures, combining 3D laser scanners with RTK GNSS provides more information for on-site decision-making than operating each device alone and makes it easier to utilize the data with downstream processes in mind.

However, renting may seem convenient, and if you proceed without sufficient preliminary checks you can end up choosing an equipment configuration that doesn't suit the site, failing to achieve the required accuracy, or obtaining point clouds that cannot be used directly in your work. What people searching for "rental 3D laser scanner RTK GNSS" really want to know is not general information about equipment, but the practical decision-making criteria for what to check first to avoid failure at their own site. In this article, we organize those decision criteria into five items and explain them in detail, including points that are easy to overlook before renting.

Table of Contents

• Clarify the assumptions for using a 3D laser scanner and RTK GNSS on a rental basis

• Checklist item 1: Clarify what to measure and what kind of deliverable you want to produce

• Check Item 2: Confirm that the equipment configuration is appropriate for the site conditions.

• Checklist item 3 Align the required accuracy and the approach to coordinate operations

• Checklist item 4 Determine who will operate and how much support is needed

• Confirmation item 5: Confirm the post-acquisition data processing and the conditions for return

• Be aware of common pitfalls when renting

• Summary

Organizing the assumptions for using a 3D laser scanner and RTK GNSS on a rental basis

Both 3D laser scanners and RTK GNSS handle positional information, but their roles are not the same. 3D laser scanners excel at recording the shapes of objects and terrain as high-density point clouds, making them well suited to quickly capturing complex structures and expansive spaces in three dimensions. RTK GNSS, on the other hand, is important for providing a coordinate reference on site and proves invaluable when determining where to correctly place measured point clouds, how to integrate measurements taken over multiple days, and how to align them with other drawings or surveying results.

Therefore, when consulting about rentals, it is not sufficient to simply think “I want to rent a 3D laser scanner” or “RTK GNSS might also be useful.” What’s important is to clarify whether you need to capture geometry, align coordinates, or both. For example, if the focus is on grasping relative positions—such as pre-renovation records of a building interior—you may be able to proceed with an approach centered on a 3D laser scanner. Conversely, if you want to check the relationship between existing structures and design positions outdoors, manage multiple construction areas in the same coordinate system, or use point clouds for drawings and as-built verification, it is better to assume a combination with RTK GNSS to avoid problems in later processes.

The value of renting lies in being able to choose the configuration you need for only the period you need it. However, that flexibility also means that unless you firm up how you will use it first, you cannot determine the optimal configuration. To choose a setup that fits the site, you should first organize the requirements in the order of the task’s purpose, deliverables, accuracy, and operational setup — not by the equipment’s name. If you decide to rent while leaving these points ambiguous, you will likely end up with either surplus or insufficient equipment on site.

Checklist item 1: Clarify what to measure and what deliverables you want

What you should confirm first is not what to measure, but what will ultimately be used as the deliverable. This may seem similar, but in practice it makes a big difference. For example, if the purpose is to check for interference with existing equipment, what may be required is fidelity in reproducing fine shapes. In civil engineering site surveys, continuous capture of slopes and terrain may be important. If the goal is to archive records before renovation, it is necessary that later review allows dimensional verification and an understanding of positional relationships. In other words, even though the phrase "measure in 3D" is the same, the required deliverables can vary greatly depending on the site.

This clarification is necessary because the equipment configuration to rent, the required working time, and the approach to post-acquisition processing all change depending on the deliverables. In some cases the point cloud data itself is the final deliverable, while in others measurements are taken on the premise that the point cloud will be developed into cross-sections, dimensions, coordinate-annotated drawing information, base data for quantity calculations, and so on. For the former, a setup that prioritizes data capture is often sufficient, whereas the latter requires workflows that consider coordinate assignment and control-point management from the outset.

A common mistake here is that field personnel think, "If we just rent all the equipment for now, we'll manage." In reality, when the objective is unclear, it's impossible to decide where on site to measure and at what density. As a result, data at required locations can be sparse while unnecessary areas are measured excessively. This not only wastes time but also increases the burden of post-processing. More point cloud data is not necessarily better; what matters is that it is necessary and sufficient for the purpose.

Also, whether to use RTK GNSS in combination should be decided by working backwards from the deliverables. For example, if the purpose is only to compare shapes within the site, maintaining relative positional relationships may be sufficient. However, if you need to overlay with existing drawings, measurements from other days, construction quality control standards, or site coordinates, deliverables with ambiguous coordinate references will be difficult to use. Before renting, clarify who will use the data and for what purposes after acquisition, and, if necessary, design the workflow from the outset assuming coordinate management.

Therefore, before a rental consultation, you should at minimum have internally agreed on the type of object, the measurement range, the required level of reproducibility, the intended use of the deliverables, and whether the data will need to be overlaid with other data. Simply completing this preliminary organization makes it easier to remove unnecessary equipment and narrow the setup down to only what is truly needed. The success or failure of a rental is largely determined not at the moment of borrowing, but at the stage of verbalizing the purpose.

Checklist Item 2: Verify that the equipment configuration matches the site conditions

Next, it is important to determine whether the equipment configuration is appropriate for the site conditions. 3D laser scanners and RTK GNSS are devices that are hard to evaluate based solely on specifications seen on paper; their compatibility with the actual field environment is highly significant. Whether the site is indoors or outdoors, an open area or one with many obstructions, whether the targets are mainly fixed objects, or whether there is heavy pedestrian or vehicle traffic—all of these factors substantially affect how easy the system is to operate.

For example, even if you want to efficiently measure a large outdoor area, the stability of RTK GNSS can be affected in environments with many tall structures or trees nearby. Conversely, in indoor, underground, or equipment-dense spaces, using GNSS can be difficult, so you need to consider alternative methods for positioning. In other words, even if you rent a 3D laser scanner and RTK GNSS as a set, both won't always perform equally well—the leading solution changes depending on site conditions.

Also, the extent of the measurement area is an easy-to-overlook point. Operational requirements differ between detailed, precise recording in a confined area and acquiring an overview of conditions across a wide area. In a confined area, it is important to change position carefully to avoid missing spots while taking measurements. By contrast, for a wide area, efficient movement, planning of measurement locations, and maintaining the continuity of coordinates become crucial. If you choose equipment based solely on the gear without organizing site conditions before renting, you may end up moving more than expected on site or needing to remeasure.

Furthermore, installation space and workflow cannot be ignored in practical operations. Whether the floor allows stable tripod placement, whether you can secure the measurement position without obstructing passage, and whether you can withdraw or reinstall in a short time—these points directly affect working time. Especially in facilities that are in operation or sites with traffic, it is important not only how well the device measures but also whether you can carry out work while minimizing the impact on the surroundings. Differences in usability that do not show up on a specification sheet can make a big difference on site.

Therefore, before renting, organize site photos, floor plans, the target area, the condition of obstacles, available working hours, access routes, and whether power and communications are available, as this improves the accuracy of the equipment configuration. If necessary, verify not only the 3D laser scanner unit itself but also the peripheral components required for RTK GNSS operation, storage media, mounting fixtures, protective equipment, and ease of transport. If the configuration is tailored to site conditions, you can carry out operations—including setup and takedown—without undue strain, not just the measurements themselves.

Checklist Item 3: Align required accuracy and the approach to coordinate operations

The area most prone to misunderstanding in rentals is perceptions of accuracy. The idea that using a 3D laser scanner makes everything highly accurate, or that combining RTK GNSS will assign correct coordinates to every point cloud, creates mismatches on site. What’s important is to align in advance where and to what degree accuracy is required, and how that accuracy will be guaranteed operationally.

First, it’s important to understand that shape accuracy and coordinate accuracy are not the same. 3D laser scanners excel at densely capturing an object’s form, but how that point cloud is tied to site coordinates or drawing coordinates is another matter. Even if point clouds are well aligned with each other, if the entire dataset is not correctly placed in the intended coordinate system, its use in downstream processes will be constrained. Conversely, even when reference points are established with RTK GNSS, if the measurement extent or the method for acquiring positional relationships is not appropriate, the ability to reproduce the shape may be insufficient.

What is important here is deciding at the outset which coordinate system you will operate in. Whether you manage with a site-specific coordinate system, align with public standards or existing survey results, or operate to match the drawings, the necessary preparations will differ. Especially when measurements span multiple days or when integrating data from other workflows, ad hoc coordinate assignment tends to make later alignment difficult. Whether the data collected during the rental period will only be viewed on site or will become an asset reused later dramatically changes how you address accuracy.

Also, when using RTK GNSS, the positioning solution can be unstable depending on site conditions. Because results can vary with sky visibility, obstructions, communication conditions, and how work positions are taken, simply bringing the equipment is not sufficient. You should perform verification measurements as needed, cross-check critical points by other means, and confirm on-site the relationship between the point cloud and control points; a perspective that treats accuracy as an operational matter is required. Even when using rental equipment, accuracy should not be left to the device alone but created through operational practice.

Therefore, before renting, it is important to ensure stakeholders are aligned on the required accuracy level, the allowable error, what the point clouds will be aligned to, the final coordinate system to be used, and the method for on-site verification. If these points are unclear, site personnel may believe they have collected the necessary data, but from the perspective of design or management staff the data can turn out to be unusable. Agreeing on the approach to accuracy and coordinates in advance clarifies the division of roles between the 3D laser scanner and RTK GNSS, making it easier to create a realistic rental plan.

Checklist item 4 Decide who will operate and how much support is needed

People tend to focus on equipment performance, but in rentals the factor that actually determines success or failure is who uses it — the operational setup. Both 3D laser scanners and RTK GNSS are devices that, if handled incorrectly, can easily cause missed captures on site or coordinate inconsistencies. Especially when there are operators using them for the first time, the higher the equipment’s performance, the greater the risk that work will proceed without following the correct procedures.

For example, if measurement positions are chosen improperly, blind spots will remain and the necessary areas cannot be adequately captured. Even if a point cloud appears to contain a large amount of data at first glance, the specific areas you later want to use may be missing. Even with RTK GNSS, if you do not correctly understand the initial setup, how to check the positioning status, and how to handle coordinates, you can end up with data that looks plausible but cannot be used later. In other words, the decision about whether to rent should be based not on whether you can borrow equipment, but on whether you can operate it reproducibly on site.

What becomes important, then, is the scope of support. You should clarify whether on-site operation explanations alone are sufficient, whether pre-operation checks are necessary, whether you want an inquiry system for troubleshooting, or whether support is needed up to post-acquisition data verification. Especially with short-term rentals, it often happens that full-scale operation is carried out for the first time on the day at the site, so lack of preparation can directly lead to failure in the actual run. If the person in charge is inexperienced, it is more important for them to understand what to check as they proceed than to master the operation itself.

Also, it's best to decide the number of workers and the division of roles in advance. Whether the person operating the equipment, the person determining the measurement range, the person securing pathways while monitoring safety, and the person checking the acquired data on site are the same or different will affect the quality of the work. On small crews, one person often takes on multiple roles, so if priorities are not set beforehand, measurements may be taken but verification is likely to be insufficient. With rentals, even if only the equipment arrives, without an operational plan you will not achieve the expected results.

As operational staff, you don't need to be afraid of the equipment's difficulty itself, but you should calmly evaluate whether the operation fits your company's setup. Before deciding to rent, clarify whether anyone in your company is familiar with point cloud and coordinate operations, whether on-site work will be handled by someone encountering it for the first time, and who will make decisions after data acquisition; doing so makes it easier to see the level of support you'll need. Looking at whether you have a system that can actually handle the equipment, rather than at the equipment's performance, is the quickest route to a successful rental.

Check Item 5: Confirm data processing after acquisition and the return conditions

When considering rentals, many sites focus their attention only on "borrowing and measuring." However, what truly matters is how you handle the data after acquisition and whether you can smoothly complete the process through to returning the equipment. Measurements using 3D laser scanners and RTK GNSS are not jobs that finish with data capture. Only when downstream steps—such as inspecting point clouds, cleaning up unnecessary data, aligning coordinates, and producing deliverables—are included does the work truly constitute a complete operation.

For example, even if you think you collected enough data on site, when you return to the office and open the data it can be difficult to discern the necessary positional relationships, or the information required for integration may be insufficient. This is not uncommon and tends to occur when the on-site points to check are not clearly defined. Therefore, before renting, you should decide how much to verify on the day of acquisition, who will perform the initial check, and at what point you will determine whether re-acquisition is necessary.

Also, data volume and storage methods are important. Point cloud data can become large depending on the area covered and density, and if transfer methods and storage locations are unclear, confusion can arise after the fieldwork. Planning the work terminal environment, storage rules, internal sharing methods, and which format the deliverables will be produced in can reduce delays after acquisition. Renting is suitable for optimizing on-site costs, but without a clear plan for post-processing it can end up increasing internal man-hours.

The same applies to return conditions. With short-term rentals, you may need to handle returns immediately after on-site work finishes. If you do not grasp in advance how to pack the equipment, check accessories, handle recording media, and verify the condition at the time of return, you may find yourself rushing at the end due to the sense of relief after completing the measurements. In practice, you may have less time during tear-down than on the measurement day. If site cleanup and equipment returns will be carried out simultaneously, it is important to plan the procedures in advance, including the return flow.

An aspect that is even more easily overlooked is planning for possible re-measurements. If problems are discovered after acquisition, whether you can secure additional time or re-enter under the same conditions varies by project. That is precisely why, before renting, you need to design the site inspection items, data verification items, and the process up to return as a single, integrated workflow. If you can anticipate this before renting, rental ceases to be merely a temporary use and becomes an option for reliably achieving results.

Know the Typical Mistakes That Commonly Happen When Renting

We've reviewed five checkpoints so far, but when failures occur on actual sites, they are usually the result of multiple overlapping factors. A typical case is choosing equipment while the purpose remains unclear. If you proceed without clarifying whether it is for as‑is/site condition recording, as the basis for drafting, or for verification of completed work, the required point density, the necessary coordinate management, and the appropriate verification methods are not determined, and it just ends up being used haphazardly.

Another common mistake is underestimating site conditions. Approaching a project with preconceived notions—such as assuming RTK GNSS will work fine because it’s a wide outdoor area, or that a 3D laser scanner alone will suffice because it’s indoors—often leads to problems in practice with obstructions, communications, movement paths, and blind spots on the target. Because the site environment is rarely exactly as described in the specifications, it’s safer to assume that how easy measurements will be is highly case-specific.

Furthermore, deploying to live operations without considering the operators' level of proficiency is risky. If personnel are not familiar with the equipment and on-site time is limited, data may be collected but verification may not keep up, leading to deficiencies being discovered later. Point clouds and coordinates may appear fine when viewed in the field, but insufficiencies can first become apparent during operational use, so it is important to decide on the same day what should be checked.

And another cause of failure is underestimating post-acquisition processing. Renting is convenient, but point clouds and coordinate data do not have confirmed value simply by being acquired. Only when you start with the end in mind—on-site decision-making, internal verification, and incorporation into deliverables—does renting become meaningful. It is important not to stop at comparing equipment and checking specs, but to think about the entire workflow.

Summary

What matters for successfully renting 3D laser scanners and RTK GNSS is not the act of renting the equipment itself, but first deciding what you will use it for, the level of results you require, and the operational setup under which it will be used. The points to confirm are: clarification of deliverables, a configuration suited to site conditions, required accuracy and coordinate management, operational setup and support, and post-acquisition processing and return conditions—five items in total. If these five items are organized, on-site uncertainty is reduced and it becomes easier to link rented equipment to results without undue strain.

Especially from the standpoint of practitioners, it is not always appropriate to combine a 3D laser scanner and RTK GNSS in a large-scale setup; it is important to assess the balance between the accuracy required and the workload for each project. When wide-area shape capture or detailed as-built documentation is needed, utilizing rented equipment is effective. On the other hand, for situations that demand greater mobility—such as on-site coordinate verification, positioning, verification of control points, and routine simple surveying—more nimble options can improve operational efficiency.

At such sites, LRTK—a GNSS high-precision positioning device that can be attached to a smartphone—is also a strong option. When you need to quickly confirm reference positions before large-scale point cloud acquisition, when it's not worth bringing heavy equipment but you still want to secure coordinates accurately, or when you want to carry out site checks alone rather than with multiple people, highly mobile operations are useful. Even when considering rental equipment, breaking down the site's objectives into detailed tasks makes it easier to distinguish work that requires 3D laser scanners and RTK GNSS from work that can be adequately handled by lightweight high-precision positioning devices like LRTK. As a result, you can more easily choose the right means where they are needed while improving overall site productivity.