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Underground pipe location system uses theodolite with laser rangefinder
Underground pipe location system uses theodolite with laser rangefinder
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机译:地下管道定位系统使用经纬仪和激光测距仪
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摘要
An underground pipe location system uses a theodolite (9) placed over the center of a manhole (2) with angular scale (11) on a pivoted table (10) holding a surveyor's rod (14) to measure the chamber depth with sliding laser range finder (15) to measure the interior for mapping by the computer (18).
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