Details
A 19th-Century lacquered-brass mining dial,
signed on the silvered compass Charles Chevalier, Ingenieur Opt.en Breveté, Palais Royal No. 163, a Paris, the iron needle on agate pivot, with engraved circle with gimbal attachment and suspension arc, with additional protractor divided in two quadrants, and other items in fitted and shaped walnut case -- 9¾in. (24.8cm.) wide
See Illustration
signed on the silvered compass Charles Chevalier, Ingenieur Opt.en Breveté, Palais Royal No. 163, a Paris, the iron needle on agate pivot, with engraved circle with gimbal attachment and suspension arc, with additional protractor divided in two quadrants, and other items in fitted and shaped walnut case -- 9¾in. (24.8cm.) wide
See Illustration