The scanner can calculate its position in the manhole shaft by using its sensor data to measure incremental motion instead of the payout cable. Weighing less than 30 pounds you can carry it to easements and other difficult to access sites. SPIDER collects millions of 3D measurements during each inspection so the manhole can be measured to less than 5mm accuracy. Use the point cloud to evaluate the structural changes in the manhole before and after rehab. The scanner also provides live-stream video and recorded MPG video.
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