Ventes live - Lot 488
[Measuring]
Woltmann water current meter.
19th c
€ 200 / 220
Enchérir en direct (Drouot*) Enchérir en direct (Invaluable*)Les enchères sont closes
Description du lot
Metal, copper, 26 x 20 x 7 cm. Unsigned.
Wooden box.
Woltmann reel with multi-bladed fan to measure flowing air and water. The forerunner to modern inferential meters and turbine meters!
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