Graduated semicircular metal trial frames

Graduated semicircular metal trial frames

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Graduated semicircular metal trial frames
Science Museum Group
The Board of Trustees of the Science Museum

Graduated semicircular metal trial frames, two-cell with 2 lenses, English (?), 1891-1910

Details

Category:
Ophthalmology
Collection:
Sir Henry Wellcome's Museum Collection
Object Number:
A681091
Materials:
glass, aluminium, ? and steel
type:
trial lenses
credit:
Laidlaw Purves, Mrs.