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History of Science Museum

Otis King's Cylindrical Slide Rule, by Carbic Ltd, London, 20th Century

Inventory Number 25142


Acknowledgement: © History of Science Museum, University of Oxford, inv.25142

Item type
Object
Primary inscriptions
"E / 0358" on base; "OTIS KING'S / MODEL K / Patent CALCULATOR" slip pasted on cardboard box.
Object type
Slide rule
Dimensions
Height: 40mm Width: 175mm Depth: 41mm Weight: 234g
Inventory No
25142
Accession Number
1994-3/1

Description

A rectangular black cardboard box with a removable lid that contains a cylindrical brown leather carrying case with a copper alloy snap button fastener. The leather case holds a Model K Otis King cylindrical slide rule that consists of 2 slide rule scales arranged in a spiral around a cylinder, with a copper alloy handle at one end and a black metal sliding tube-marker along the barrel. The upper part of the cylinder carries scale no. 423.