Folding Rule

Made:
1910 in United Kingdom
maker:
A G Thornton Limited
Ivory sector by A G Thornton Ltd
Photographed on a white background. Folding Rule

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Ivory sector by A G Thornton Ltd Photographed on a white background.
Science Museum Group Collection
© The Board of Trustees of the Science Museum

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

Ivory sector by A.G. Thornton Ltd.

Details

Category:
Mathematics
Object Number:
Y2001.209
Materials:
brass (copper, zinc alloy) and ivory
Measurements:
open: 3 mm x 305 mm x 27 mm,
closed: 3 mm x 160 mm x 35 mm,
type:
folding rule
taxonomy:
  • furnishing and equipment
  • measuring device - instrument
  • ruler - measuring device