Folding rule

Folding rule Folding rule Folding rule

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Creative Commons LicenseThis image is released under a CC BY-NC-SA 4.0 Licence

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Folding rule
Science Museum Group
© The Board of Trustees of the Science Musuem

Science Museum Group
© The Board of Trustees of the Science Museum

Science Museum Group
© The Board of Trustees of the Science Museum

12-inch ivory folding rule, made by A.G. Thornton Ltd, Manchester.

Details

Category:
Mathematics
Object Number:
Y1992.48
Materials:
ivory and copper (metal)
Measurements:
overall (open): 8 mm x 304 mm, 21 g
type:
ruler
credit:
Purchased From Biddle and Webb