3) fused quartz, reference type, double surface, 3 in. Dia., 0.625 in. Thk, 0.000001 in. Flatness accuracy, with wooden case, surface angle shall b 10 to 15 minutes of arc to each other
No other part numbers with same form, fit, and function found.
Two or more optical flats. Excludes optical parallels.
NSN 4140-00-277-6285
NSN 5930-01-435-2260
NSN 5990-01-461-8969
NSN 5990-01-101-5097
NSN 5835-01-017-0958
NSN 6240-01-231-4184
NSN 5965-01-134-3949
NSN 4140-01-376-0986
NSN 6145-01-538-2052
NSN 5835-01-010-3103
NSN 4140-01-050-8096
NSN 5925-01-058-6079