Brass Surveyor\'s Lamp, Underground Surveying, Miner\'s, Miners\', Mining, Miners
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Brass Surveyor\'s Lamp, Underground Surveying, Miner\'s, Miners\', Mining, Miners:
$719.99
Brass gimbaled hanging miners\' underground surveyor\'s lamp (plummet lamp). All brass except steel point on end.
The purpose of the plummet-lamp was to provide an illuminated target for the surveyor/engineer conducting his work underground. Unlike above-ground surveying, back-sight and fore-sight stations in underground surveys were placed in the ceiling (as constant work would obliterate points in the floor). In use, the plummet-lamp was suspended from a station spad in the ceiling and the wick (fed from a fuel font within the hollowed body of the plummet) was ignited. The instrument man then had an easily sighted illuminated point..
Condition - I would rate it excellent.
Size: Measures approx. 7\" tall from point to top of wick cap and measures 39 3/4\" when hanging..
Returns are accepted if not asBrass Surveyor\'s Lamp, Underground Surveying, Miner\'s, Miners\', Mining, Miners:
$719.99