Theodolite
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A theodolite is a precision optical instrument for measuring angles between designated visible points in the horizontal and vertical planes. The traditional use has been for land surveying, but it is
Diagram of an optical readout theodolite
Jesse Ramsden's Great Theodolite of 1787
A theodolite of 1851, showing the open construction, and the altitude and azimuth scales which are read directly
A theodolite of the transit type with six-inch circles, manufactured in Britain c. 1910 by Troughton & Simms
Surveying
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Surveying or land surveying is the technique, profession, art, and science of determining the terrestrial positions of points based on the distances and angles between them. These points are usually o
Theodolite
…optical instrument for measuring angles between designated visible points in the horizontal and vertical planes. The traditional use has been for land surveying, but it is also used extensively for building and infrastructure construction, and some specialized applications such as meteorology and rocket launching…
A surveyor using a total station
A student using a theodolite in field
Table of Surveying, 1728 Cyclopaedia
A railroad surveying party at Russel's Tank, Arizona, in the 1860s