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Item:253226296134A brass circumferentor, circa 1750. German, probably Nuremberg or Augsburg. Rectangular grid plate. Hand stamped numerals are unusual and the trigonometric grid is very rare. In embossed leather case. 11 ½ long x 6 ¼” diameter. From the collection of the former John E. Chance and Associates in Lafayette. Please ask any questions you may have or if you need additional photos.Maker:Unknown
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Circa 1750 Rare German Brass Circumferentor (surveyor's compass)