Pair of proof plates (one item, showing interferen

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
Measurements:
lens: 15 mm x x , 47 mm, .045kg
test base: 21 mm x x , 55 mm, .105kg
credit:
J H Dallmeyer Ltd

Cite this page

Rights

We encourage the use and reuse of our collection data.


Data in the title, made, maker and details fields are released under Creative Commons Zero


Descriptions and all other text content are licensed under a Creative Commons Attribution 4.0 licence

Using our data

Download

Download catalogue entry as json

Download manifest IIIF

Our records are constantly being enhanced and improved, but please note that we cannot guarantee the accuracy of any information shown on this website.