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Bull Dog Motor & Wire Handy Data

Major collection: Science & Technology
Object type: slide rule
Maker: Bull Dog Electric Products Company
Place made: United States, Michigan, Detroit
Date made: 1935, 1938
Materials: paper; plastic
Measurements: 1/4 in x 2 1/2 in x 6 1/4 in

White plastic cover printed in black and red with beige paper slide printed in black and red. Motor vs. Horse Power scales on front, Current per Phase scale. On reverse: Wires and Sizes on each side of slide.