Segmeter, plastic, for measurement of bifocal lenses

Segmeter, plastic, for measurement of bifocal lenses

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Segmeter, plastic, for measurement of bifocal lenses
Science Museum Group
© The Board of Trustees of the Science Museum

Segmeter, plastic, for measurement of bifocal lenses, possibly American, mid-20th century

Details

Category:
Ophthalmology
Object Number:
1987-587
Materials:
plastic
Measurements:
length 187 mm
width 35 mm
type:
segmeters
credit:
Christie's South Kensington Limited