- Subject
- Photography
- Item type
- Object
- Makers
- Lancaster
- Primary inscriptions
- 'J. Lancaster & Son Birmingham 10 20 30 40 TIME 1 2 4 8 16 1/2 hl W.A. Patent, Rentigraph'
- Dimensions
- Diameter: 52mm Height: 29mm Weight: 133g
- Inventory No
- 89968
Description
Wide angle Rectilinear doublet lens, manufactured by J. Lancaster & Son. Consists of a copper alloy body tube with a convex lens mounted at either end. These lenses are mounted either side of a retracting iris. Iris is controlled by rotating the centre section of the body tube. Lower lens rim is mounted in a circular plate which has a screw thread around its edge.
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