Collection

Pair of proof plates

Made:
1909 in London
maker:
J H Dallmeyer Ltd

Pair of proof plates (one item, showing interference colours), used for testing curvature in the manufacture of high class lenses by J.H. Dallmayer Ltd., London, England, 1909.

Details

Category:
Optics
Object Number:
1909-204
Materials:
glass
Measurements:
lens: 15 mm x x , 47 mm, .045kg
test base: 21 mm x x , 55 mm, .105kg
type:
plate
credit:
J H Dallmeyer Ltd

Related Objects

Telescope by John Yarwell. (telescope - terrestrial; telescope - refracting)

‘Visual glasses’ designed by Benjamin Martin (nose spectacles - bow)

Telescope by Christopher Cock (Telescope)

Pair of plastic National Health Service spectacles (spectacles; spectacle case)

Handheld reading lens and case (Reading lens; case)

Refracting telescope with achromatic lens, made by the Dollond family (terrestrial telescope; telescope - refracting)