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2 definitions found

From: DICT.TW English-Chinese Dictionary 英漢字典

 circumferentor
 測周器; 圓周羅盤; 地質羅盤

From: Webster's Revised Unabridged Dictionary (1913)

 Cir·cum·fer·en·tor n.
 1. A surveying instrument, for taking horizontal angles and bearings; a surveyor's compass. It consists of a compass whose needle plays over a circle graduated to 360°, and of a horizontal brass bar at the ends of which are standards with narrow slits for sighting, supported on a tripod by a ball and socket joint.
 2. A graduated wheel for measuring tires; a tire circle.
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