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French Optical Pyrometer

French Optical Pyrometer

Auction:
3205T
Auction:
Discovery - Feb 13, 2019
Lot:
1391
Sold for:
$37$30

French Optical Pyrometer, E. Ducretet, Paris, silvered scale rotating around the central lens, brass shaft with maker's plaque, housed in the original velvet-lined case with extra lens. Clocks, More ...

French Optical Pyrometer

French Optical Pyrometer

Auction:
3147M
Auction:
Clocks, Watches & Scientific Instruments - Oct 05, 2018
Lot:
328
Unsold
 

French Optical Pyrometer, E. Ducretet, Paris, silvered scale rotating around the central lens, brass shaft with maker's plaque, housed in the original velvet-lined case with extra lens. Clocks, More ...

Crooke's Radiometer

Crooke's Radiometer

Auction:
3147M
Auction:
Clocks, Watches & Scientific Instruments - Oct 05, 2018
Lot:
342
Sold for:
$215$175

Crooke's Radiometer, 19th century, hand-blown colorless glass sphere with blue swirled stem, and mica vanes, ht. 9 in. More ...

Crooke's Radiometer

Crooke's Radiometer

Auction:
3093M
Auction:
Clocks, Watches & Scientific Instruments - Apr 20, 2018
Lot:
634
Sold for:
$338$275

Crooke's Radiometer, late 19th century, hand-blown colorless glass sphere with mica vanes, mounted to a turned wood base, ht. 9 1/2 in. More ...

Oak-cased "Tycos" Recording Pyrometer

Oak-cased "Tycos" Recording Pyrometer

Auction:
2974T
Auction:
Discovery - Jan 12, 2017
Lot:
1495
Unsold
 

Oak-cased "Tycos" Recording Pyrometer, Taylor Instruments Company, Rochester, New York, ht. 16 1/2, wd. 12 1/2, dp. 10 3/4 in. More ...