Four quartz optical flats
- maker:
- Optical Works Ltd
Four quartz optical flats (1-inch diam, 1/2-inch thick; two flats chipped at the edges) in mahogany wooden case, made by Optical Works Ltd., London W5, England, serial number T.600 S.54.
Details
- Category:
- Optics
- Object Number:
- 1976-434
- Materials:
- quartz, mahogany (wood), metal, brass (copper, zinc alloy), nickel plated and felt
- Measurements:
-
case: 43 mm x 112 mm x 120 mm, , .29kg
flat (each): 25 mm x 13 mm x , ,
- type:
- optical flat
- credit:
- Ministry of Defence (Procurement Executive)