80 - The Wheilon CalculometrePhilip Weiss Auctions
Wheilon Manufacturing Company, Boston, USA, no. 141". Glass covered paper in wood frame. Only a small number of these were produced and very ...
Bidding Has ConcludedEstimate : 1,000.00 - 1,200.00
Sold to floor .. for 1,416.00
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85 - Dr. Culbertson's PrisoptometerPhilip Weiss Auctions
C. 1890 Dr. Culbertson's prisoptometer was described in its day as" a very ingenious instrument to detect anomalous refraction" . ...
Bidding Has ConcludedEstimate : 300.00 - 400.00
Sold to floor .. for 177.00
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86 - Palmer Computing ScalePhilip Weiss Auctions
Copyright entered 1843. "Palmer's Computing Scale. This is a revolving table, for solving mathematical problems", by a simple mechan...
Bidding Has ConcludedEstimate : 250.00 - 300.00
Sold to floor .. for 295.00
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87 - Der Kleiner RechnerPhilip Weiss Auctions
(THE Little ACCOUNTANT). An early 20th century German child's calculating device with wonderful polychrome graphics.Soennecken's Verlag B...
Bidding Has ConcludedEstimate : 200.00 - 300.00
Sold to Edison .. for 619.50
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89 - ComptatorPhilip Weiss Auctions
in original case. A later European-made version of the Rapid (see lot 23)
Bidding Has ConcludedEstimate : 300.00 - 400.00
Sold to floor .. for 153.40
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