Live veiling - Lot 1176
[Surveying instruments]
Mining theodolite.
Brussels, P. Boël, 2nd half 19th c
€ 200 / 300
Live bieden (Drouot*) Live bieden (Invaluable*)Biedingen zijn afgesloten.
Beschrijving lot
Brass horizontal disk with silvered graduated magnetic compass, signed on compass scale with maker's name, graduated half vertical circle, telescope and alidade and tubular spirit level, on brass tripod.
Wooden box (31 x 31 x 27 cm).
So-called "boussole de mine" to compute slopes in mineshaft excavation.
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