bn:00678005n
Noun Concept
Categories: Surveying instruments, Angle measuring instruments
EN
graphometer  Compass graphometer  half-circumferentor  Semi-circle  Semi-circumferentor  semicircle
EN
The graphometer, semicircle or semicircumferentor is a surveying instrument used for angle measurements. Wikipedia
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EN
The graphometer, semicircle or semicircumferentor is a surveying instrument used for angle measurements. Wikipedia
A surveyor's instrument for measuring angles. Wiktionary
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