Disc is electro-formed copy of master disc within plus or minus 50.000 microinches; used with 5x illuminated (flash) magnifier to visually compare sand blast cleaned surfaces to the disc (0.5 to 4.0 mils); includes vinyl disc case; complies with astm d4417
No other part numbers with same form, fit, and function found.
NSN 4140-00-258-3612
NSN 5935-00-399-3420
NSN 5910-01-137-2414
NSN 5960-01-398-4883
NSN 5925-00-924-9596
NSN 5835-00-564-0057
NSN 6685-01-334-6091
NSN 5965-00-532-3284
NSN 5996-00-814-7376
NSN 6105-01-537-9207
NSN 5998-00-541-8792
NSN 5985-01-644-4237