Auction: Clocks, Watches & Scientific Instruments - 2502Location: MarlboroughDate / Time: May 01, 2010 10:00AM
Description:
Brass Graphometer, unmarked, the 3 in. radius half circle divided 0-180 degrees in two complimentary scales, the alidade with two verniers marked 0-30 minutes, mounted sighting vanes and recessed compass with printed paper card and steel pointer, ht. 7 1/2 in.
Estimate $300-600