Whitehead & Hoag Simplex Wiring Computer

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Country of manufacture: USA,            Date of manufacture: ____
Overall Height: 11.2 cm,          Width: 7.4 cm
Materials: Plastic coated cardboard
Scales: 4
Front side
     Outer Disk: Amperes, Volts Lost
     Inner Disk: Distance in Feet, Size (B&S gauge or circular mils)
Back side: Electrical characteristics of copper wire in tabular form
Condition: C0 (Mint)
Came with: nothing

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