Picture No | 10217870 |
Date | 1912 |
Description | Theodolite 1912 |
Details |
A typical Theodolite. Theodolites are similar to sextants, being used by mariners and explorers to determine their position, by measuring the angle between the horizon and the sun.
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Source | Illustrated London News. 1912, page 392 |
Credit | © Illustrated London News Ltd/Mary Evans |
Restrictions |
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