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![Leveling and centering retro-prism for reflecting light from electronic distance measuring instrument geod1094.jpg Leveling and centering retro-prism for reflecting light from electronic distance measuring instrument](/sites/default/files/styles/max_1300x1300/https/s3.amazonaws.com/s3-east-testmedia-noaa.woc.noaa.gov/dam/Photos/legacy/pl23_geod1094.jpg?itok=e00LBJT4)
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Leveling and centering retro-prism for reflecting light from electronic distance measuring instrument.
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Geodesy