Symmetrical lens

Made:
circa 1880 in Paris
maker:
Lerebours et Secretan
Symmetrical lens

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Symmetrical lens 7.5 inch f.l in a brass mount. No iris diaphragm. Rack and pinion focusing mount. Lerebours Secretan c.1880.

Details

Category:
Photographic Technology
Collection:
Arthur Frank Collection
Object Number:
1979-559/1359
Materials:
glass and brass (copper, zinc alloy)
Measurements:
overall: 128 mm 69 mm,
type:
symmetrical lens
credit:
The Arthur Frank Collection