MusEYEum Online Catalogue

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'Bondwell' opticians slide rule
MANUFACTURING AND DISPENSING EQUIPMENT
slide rule
C. W. Dixey & Son Ltd
Europe: United Kingdom, England, London
c.1905
metal; bone
overall: 25 mm x 169 mm

Optician's slide rule for calculating spherical and prism lens powers, comprising two rectangular bars in bone (?) set within white metal slide, overprinted with dioptric scales on one side only.


2010.580

Gift of Mr Brian Mitchell, 2010



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