Artifact Details Title Beginner's slide rule (Mannheim) Catalog Number 102630996 Type Physical object Description Beginners (Mannheim type) slide rule with slip case. Various conversion factors printed on the back of the slide rule. Object consists of slide rule and leather case. Date c. 1954 Manufacturer Keuffel & Esser Company Place Manufactured U.S. Identifying Numbers Model number N4058W Other number Pat. 1,934,232 Dimensions overall: 3/8 in x 10 1/2 in x 1 3/8 in Category Pre-computer/slide rule Credit Gift of Ken North Lot Number X2553.2003
