Conductor selector chart in slide-rule format

Conductor selector chart in slide-rule format

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Conductor selector chart in slide-rule format
Science Museum Group
© The Board of Trustees of the Science Museum

Conductor selector chart in slide-rule format, made 1958 by Perrygraf, Illinois for Alcoa, Pennysylvania

Details

Category:
Electricity Supply
Object Number:
1985-253
type:
wires
credit:
Crosby, R.C.