12-01-201212-01-2012
Skinner Auctions
Skinner AuctionsMarlborough MA
December 1, 2012 10:00 AMCalender
59

Brass Double Telescope Graphometer

Sell one like this
$923$750
Auction: Clocks, Watches & Scientific Instruments - 2623MLocation: MarlboroughDate / Time: December 01, 2012 10:00AM

Description:

Brass Double Telescope Graphometer, signed Brand Freres, Opticians du Roi, Bruxilles, 19th century, the protractor arch with engraved scales and sighting vanes, silvered compass scale calibrated 0-360, cardinal points in block letters, alidade mounted with a 12-in. telescope with rack focusing, twin vernier scales, and bubble level, lower portion with telescope above a ball-and-socket joint and flattened thumbscrew adjusting nut, all on a turned wood stand.
Estimate $800-1,200

small scratch on lens, objective lens has chips