Hardened case for the slit light ophthalmic end item nsn 6540-01-520-7942. Found in army assemblage n315, medical materiel set eye exam clinic: depmeds
NSN 6150-01-526-9313
NSN 5935-00-740-8759
NSN 6150-00-130-8285
NSN 5905-01-288-5627
NSN 6320-01-198-4024
NSN 6110-01-517-4974
NSN 6130-00-413-4683
NSN 5960-01-418-8402
NSN 6620-01-468-3826
NSN 6685-01-191-5819
NSN 5905-00-758-7788
NSN 5996-01-415-1028