Ivory and silver folding ruler in original leather case, made by A. G.Thornton and given as a promotional gift to donor's father Bertram Thomas in about 1930.
- Object Number:
case: 11 mm x 158 mm x 41 mm,
ruler (folded out): 5 mm x 609 mm x 24 mm, .1 kg
- measuring device
- Gift of Basil Thomas
- Permanent collection
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