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Brass Miner's Dial by Hall Brothers

Auction:
2502
Lot:
739
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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., Compass, Orientation, Orienteering, Vial