Auction: Clocks, Watches & Scientific Instruments - 2248Location: BoltonDate / Time: September 11, 2004 12:00PM
Description:
Maple Semi-Circumferentor, with copper scale divided 0-90-0, alidade with twin shaped sighting vanes, and inset brass compass well with blued-steel needle, wd. 11 1/2 in.
Estimate $1,200-1,500