circumferentor

[ ser-kuhm-fuh-ren-ter ]
/ sərˈkʌm fəˌrɛn tər /
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noun Surveying.

an alidade equipped with a compass and two diametrically opposed vertical arms with slits for sighting through.

Origin of circumferentor

1600–10; < Latin circumferent(ia) circumference + -or2
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

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