Circular ready reckoner calculator for gauging ele

Made:
1961-1965 in Beaminster

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Circular ready reckoner calculator for gauging electrical cables by Smith (Calculators) Limited, Beaminster for REM Products (Electrical) Limited, Breentwood, Essex.

Details

Category:
Mathematics
Object Number:
1998-469
Materials:
incomplete and plastic
type:
ready reckoner (electrical engineering)
credit:
Mr J.C. Michie