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prismatic compass

American  

noun

  1. a hand compass equipped with sights and prisms to permit aiming the instrument at a point and at the same time reading the compass direction of the point.


Etymology

Origin of prismatic compass

First recorded in 1850–55

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

He was unarmed, but carried a prismatic compass in a leather case with a strap.

From Through the Brazilian Wilderness by Roosevelt, Theodore

The trouble was overcome by building snow-mounds and taking back-angles to them with the prismatic compass.

From The Home of the Blizzard Being the Story of the Australasian Antarctic Expedition, 1911-1914 by Mawson, Douglas, Sir

The local attraction was so great on this hill that the prismatic compass was useless; luckily I had my pocket sextant with me, by which I obtained the included angles.

From Explorations in Australia, Illustrated, by Forrest, John

He was a familiar figure at the outposts, on his steadily ambling nag, armed with his prismatic compass, his odometer, and his sketch-book.

From Military Reminiscences of the Civil War, Volume 2 November 1863-June 1865 by Cox, Jacob Dolson

On all the hills in this neighbourhood the local attraction is so great that the prismatic compass is useless.

From Explorations in Australia, Illustrated, by Forrest, John

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