"Automatic calculator"

SMG00031929

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SMG00031929
Science Museum Group
© The Board of Trustees of the Science Museum

"Automatic calculator", a circular logarithmic slide rule, scale about 10" long, made of thin card

Details

Category:
Mathematics
Object Number:
1905-117
Materials:
paper (fibre product), card and wood (unidentified)
Measurements:
Lying flat: 10 mm x 117 mm x 147 mm, 0.026 kg
type:
circular slide rule
credit:
Major-General H.P. Babbage