circumferentor


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Related to circumferentor: Surveyor's compass

circumferentor

[sər′kəm·fə‚ren·tər]
(engineering)
A horizontal compass used in surveying that has arms diametrically placed with vertical slit sights in them.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.