A Miner's surveying Dial, tripod and surveyor's Davey lamp
Lot 260
A Miner's surveying Dial, tripod and surveyor's Davey lamp
Sold for £564 (US$ 876) inc. premium

Lot Details
A lacquered brass mining Dial by Davis & Son
19th Century, signed on the silvered compass face 'Davis & Son, London & Derby', the brass-cased and glazed compass with two sets of graduations around the circumference, eight compass points, two bubble levels, and an edge-bar needle with clamp, within a brass frame with a clamp and with a folding sight at either end, raised via a ball and socket joint to a brass mounting; together with a tripod and all-aluminium Davey safety lamp, dial 11.5cm diameter.

Footnotes

  • Provenance: Tudor John Walker MBE. Surveyors used these dials both on the surface and beneath ground, with plumb line and all-aluminium Davey lamp (so manufactured so as not to deflect the magnetic needle in the dial). A spark from an aluminium lamp was beleived to have caused the explosion at the Glyncorrwg Colliery in the early 1950's, and they were banned from use underground thereafter.
Auction information

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