Ink pad for the lens measuring instrument; end item nsn 6540-00-181-8037, found in army unit assemblage n315, medical materiel set eye exam clinic: depmeds
NSN 5975-00-644-4972
NSN 5930-01-209-6830
NSN 5965-01-461-7195
NSN 5960-01-359-4257
NSN 5950-01-303-2106
NSN 6105-01-634-0322
NSN 5915-00-281-8175
NSN 5915-01-523-8531
NSN 5855-00-631-4565
NSN 5935-01-628-7829
NSN 6610-00-012-3910
NSN 6145-00-820-9982