Orthops test type

Orthops test type, combined for distance and astigmatism, card, English, early 20th century

Details

Category:
Ophthalmology
Object Number:
1977-627/24
Materials:
complete, card, paper (fibre product), textile and metal (unknown)
Measurements:
overall: 950 mm x 630 mm x 30 mm,
overall (lying flat): 7 mm x 622 mm x 107 mm, 1.802 kg
type:
test types
credit:
Spread Eagle Antiques