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We get asked this question a lot: how accurate is that model?
The short answer is: as accurate as it needs to be. Whenever we have measurements and/or dimensions available, our model reproduces them to the same degree of precision as the measurement came to us. Often, however, our models are based on a range of source info, including photographs, satellite imagery and police diagrams. We use a combination of visual judgement, knowledge of standard measurements, and, when the task demands it, a scientific process called photogrammetry to position objects in the model. Depending on the source material, that usually puts our level of accuracy somewhere between millimeters and a few meters.
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