Excise Officer's slide rule, 1759-1769.

Made:
1759-1769 in London
maker:
Edward Roberts
Excise Officer's slide-rule, boxwood, 12 long; with four sliders Inscribed under one of the sliders: 'Edwd Roberts

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Science Museum Group Collection
© The Board of Trustees of the Science Museum

Excise Officer's slide-rule, boxwood, 12 long; with four sliders Inscribed under one of the sliders: 'Edwd Roberts
Science Museum Group
© The Board of Trustees of the Science Museum

Excise Officer's slide-rule, boxwood, 12" long; with four sliders Inscribed under one of the sliders: "Edwd Roberts Maker in Dove Court Old Jewry, London". Excise slide rules were used from the late 17th century to calculate the volume of liquor in barrels.The barrels came in different forms and the size of the gallon varied for different fluids. The calculations were quite complicated.

Details

Category:
Mathematics
Object Number:
1968-449
Measurements:
Closed: 23 mm x 315 mm x 26 mm, 0.02 kg
Extended: 23 mm x 590 mm x 26 mm, 0.02 kg
type:
slide rules (excise) and slide rules (excise) and slide rule (excise)
credit:
Mr H.M. Wickers