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Perrygraf circular 2" ERICO
Object type: slide rule
Maker: Perrygraf Corporation
Place made: United States, Illinois, Elmhurst
Measurements: .25 in x 2.5 in x 4 in
Nomenclature: data processing tools and equipment - slide rules
Classification: tools and equipment
White plastic card with circular dial and cursor at top. Multiplication and division only; slides not marked. Inches and cm scales on sides of card. Printed: "Products by ERICO Electlrical Connections CADWELD Rebar Splicese Railroad Bonds // Erico Products Inc., Cleveland Ohio // Erico Inc., Toronto, Ontario, Canada // Erico Europa, N.V., The Hauge, Holland // Mexerico, Mexico City, Mexico // Erico Productos Eléctricos, São Paulo, Brazil // Slide Chart by PERRYGRAF Div. Nashua Corporation, Elmhurst Ill."
Gift of John Drisko