definitions

beam compass

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noun Drafting.

a compass having adjustable legs, set perpendicular to the paper and sliding along a horizontal bar so as to permit the drawing of large circles.

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Nearby words

beale street, beam, beam aerial, beam antenna, beam brick, beam compass, beam engine, beam fill, beam hole, beam lights, beam mill

Origin of beam compass

First recorded in 1775–85
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for beam compass

  • The beam-compass, Fig. 208, consists of two trammel-points running on a beam which may be made of any convenient length.

    Handwork in Wood|William Noyes

British Dictionary definitions for beam compass

beam compass

noun

an instrument for drawing large circles or arcs, consisting of a horizontal beam along which two vertical legs slideAlso called: trammel
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012