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Ross Actinic Doublet Camera Lens

Inventory Number 78833

Acknowledgement: © History of Science Museum, University of Oxford, inv.78833

Item type
Object
Makers
Ross
Primary inscriptions
'Ross LONDON 13853 8 1/2 x 6 1/2 L.A. o s 1 2 3 4 5 6'
Physical material
copper alloy
Glass
metal
Dimensions
Diameter: 71mm Height: 37mm Weight: 153g
Inventory No
78833

Description

Actinic doublet lens, manufactured by Ross. Features two convex glass lenses housed in copper alloy body. Between the two lenses is a single aperture which is opened and closed via a lever on the side of the copper alloy body. There is a also a rotating disc protruding from side of body, this disc has six settings which alter the size of the aperture. The manufacturer's name is engraved on the side of the tube.

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