Brass Mounted Symmetrical Lens

Made:
circa 1880

Symmetrical lens in a brass mount with a 4.5 inch f.l. without an iris diaphragm. It has rack and pinion focusing. The lens is protected by a brass disk. c. 1880.

Details

Category:
Photographic Technology
Collection:
Arthur Frank Collection
Object Number:
1979-559/1363
Materials:
glass and brass (copper, zinc alloy)
Measurements:
overall: 61 mm x 78 mm x 95 mm,
type:
symmetrical lens
credit:
The Arthur Frank Collection