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March 3, 2018 03:11 pm PST
Original Link: http://feeds.boingboing.net/~r/boingboing/iBag/~3/-9-2vFpJYg0/ever-wonder-how-land-surveying.html
Ever wonder how land surveying devices work? Watch and learn
A theodolite is that gizmo on a tripod used by land surveyors. This explainer shows how they work, and discusses how they shifted from analog devices to the modern digital ones. (more…)
Original Link: http://feeds.boingboing.net/~r/boingboing/iBag/~3/-9-2vFpJYg0/ever-wonder-how-land-surveying.html
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