Folding rule

Folding rule 12-inch ivory folding rule, made by A.G 12-inch ivory folding rule, made by A.G

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

Buy this image as a print 

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License this image for commercial use at Science and Society Picture Library

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

12-inch ivory folding rule, made by A.G
Science Museum Group
© The Board of Trustees of the Science Museum

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