Hines' 'Patent Weight and Quantity Calculator', c.1908.

Made:
circa 1908 in unknown place
Hines' 'Patent Weight and Quantity Calculator', c.1908. (ready reckoner)

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Mechanical ready reckoner patented by J. Hine, 1905

Mechanical ready reckoner patented by Patented by James Hines. This form of calculator gave costs of various quantities of goods at various prices per pound, hundredweight or ton. The quantity was set by turning the apropriate wheel at the side, and the price per unit by using the keys. The cost would then show in the apropriate window.

Details

Category:
Mathematics
Object Number:
1982-748
Materials:
glass, brass (copper, zinc alloy), metal (unknown), ebony, wood (unidentified) and paper (fibre product)
Measurements:
overall: 120 mm x 680 mm x 290 mm, 16.39 kg
type:
ready reckoner
credit:
Delehar Antiques