prismatic compass
noun1
A compass, equipped with a small prism, that allows the heading to be read while sighting
Entry derived from the Wiktionary, under licence CC BY-SA 4.0 — list of authors.
noun
A compass, equipped with a small prism, that allows the heading to be read while sighting
Entry derived from the Wiktionary, under licence CC BY-SA 4.0 — list of authors.
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