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Thesaurus Term/Concept: OCTANT
| Identifier |
143020 |
| Class |
MDA OBJECT TYPE |
| Status |
Preferred |
| Index? |
Yes |
| Scope Note |
An astonomical instrument, and navigational aid, in the form of one eighth of a circle and used to measure the angular altitude of heavenly bodies. Invented in 1731 and used into the 19th Century, it was superceded by the sextant. |
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