Unidentified, ostensibly a type of abacus
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Science Museum Group
© The Board of Trustees of the Science Museum
Unidentified object, suspected of being a type of abacus, or colour blindness test, comprising a metal plate supporting an 11x16 grid of adjustable metal slips, 1850-1939
Details
- Category:
- Wellcome (general)
- Collection:
- Sir Henry Wellcome's Museum Collection
- Object Number:
- A48386
- Materials:
- frame & base, wood and plate & strips, steel
- type:
- unidentified object
