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History of Science Museum

Metal Folding Ruler - Japan

Inventory Number 15156


Acknowledgement: © History of Science Museum, University of Oxford, inv.15156

Item type
Object
Primary inscriptions
"Stainless Steel Shizu S [in symbol form] OKA."
Physical material
metal
Object type
Ruler
Dimensions
Height: 193mm Width: 16mm Depth: 11mm Weight: 0.05kg
Inventory No
15156

Description

Japanese metal (thin steel?) folding ruler, divided into 6 segments that each swivel on a hinge. The ruler measures 1 metre. One side of the ruler measures the number of cms in mms. The number of inches in 30 inch like divisions are marked '3 [with a Japanese character resembling R]' and these are divided into 20ths except for the first 2, which are measured in 50ths. 36 inches are marked '3ft' with a gap. Only one edge measures inches only and the other edge is subdivided into 16th except the the first two 32nds and third 64ths.