Mannheim Slide Rule: Model K & E, 4051
Accession Number: 2010.lej.12
A 20″ Mannheim type slide rule, made of celluloid framed on a mahogany surface. The glass cursor is missing. This slide rule has scales only the top surface and includes metric and imperial rulers on either side. Comes in a black cardboard case. Scales: Front: A, B, C, D. Also has rulers on either side. Back: Conversion tables, equivalents and settings. Markings: 185432; <4051>, Pat, June 5, 1900
Primary Materials: Celluloid, Mahogany
Markings: Old inventory number = 12.
Length = 52.2 cm, Width = 3 cm, Height = 1.4 cm
Function: Facilitating calculations.
Item is in poor condition. The glass slide is missing. The slide does not move. Part of the mahogany top surface has split. The bottom of the cardboard case is missing.
Manufacturer: Keuffel and Esser Co., New York
Date of Manufacture: c. 1901-1937
Donated to UTSIC: Yes