Circular logarithmic slide rule by K. Emil Troger

Circular logarithmic slide rule by K

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Circular logarithmic slide rule by K
Science Museum Group
© The Board of Trustees of the Science Museum

Circular logarithmic slide rule by K. Emil Troger, laminated paper with printed scales on card backing

Details

Category:
Mathematics
Object Number:
1990-458
type:
circular slide rule
credit:
Val. Devroede