Proportional Dividers
Collection
Creator(s)
Code
DU_278
Catalogue link
The adjustable pivot point allows the draughtsman to enlarge or reduce measurements by a fixed ratio.
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Mole trap -
Sine bar -
Protractor -
[Unidentified object from The David Usborne Collection]
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Ice Tongs -
Anchor -
Chemist's spoon -
Barrel gauge
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Sliding calliper -
Milliner's hat-brim former -
Artist's palette -
Clamp
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Salad basket -
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Grip exerciser