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Hobbs Manufacturing pulley figuring circular slide rule

Major collection: Science & Technology
Named collection: Keuffel & Esser Company Collection
Object type: circular slide rule
Maker: Materials: cardboard
Measurements: 1/4 in x 3 in x 3 in
2004.010.0190

Keuffel & Esser Company Slide Rule Collection Donated by InteliCoat Technologies



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