05-01-2010 05-01-2010
Skinner Auctions
Skinner Auctions Marlborough MA
May 1, 2010 10:00AMCalender
739

Brass Miner's Dial by Hall Brothers

 
Auction: Clocks, Watches & Scientific Instruments - 2502 Location: Marlborough Date / Time: May 01, 2010 10:00AM

Description:

Brass Miner's Dial by Hall Brothers, with silvered 4 1/2-inch dial engraved Hall Bros., Clerkenwell, London, 1926, two inset vials, East and West points reversed, divided 0-90 in four quadrants, needle ring calibrated 0-360, polished steel needle with lifter operated by screw at the side, gimbal-mounted compass box with silvered vernier, 2 1/2-inch inclinometer dial engraved Diff. of Hypo. & Base, threaded tripod mount, and screw-on standards supporting 13-inch lg. focusing telescope with vial below, lg. 13 3/4, ht. 7 in. level, (lacquer removed).
Estimate $250-450

Keywords

Hall Brothers, steel needle, London, Hall Bros.