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Simple theodolite with fixed sights, moveable alidade, umbra versa and recta scales, Italian, 1601-1630
Science Museum Group Collection
© The Board of Trustees of the Science Museum
Simple theodolite with fixed sights, moveable alidade, umbra versa and recta scales, Italian, 1601-1630
Science Museum Group Collection
© The Board of Trustees of the Science Museum, London
Simple theodolite, maker unknown, made in Italy, 1600-1630.
Simple theodolites were used for measuring angles during land surveys. This theodolite has fixed sights and a movable alidade. Its umbra versa (vertical) and umbra recta (horizontal) scales enable altitudes (vertical angles) and azimuths (horizontal angles) to be measured. It would have been used with a tripod for stability and accuracy.
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Details
- Category:
- Surveying
- Object Number:
- 1918-123
- type:
- simple theodolite
- taxonomy:
-
- furnishing and equipment
- measuring device - instrument
- credit:
- Court, Thomas Henry
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Data in the title, made, maker and details fields are released under Creative Commons Zero
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