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 6130-01-470-7972
NSN 5895-00-100-4877
NSN 5996-00-504-8074
NSN 5985-01-608-1184
NSN 6145-01-008-3166
NSN 5985-00-896-6233
NSN 5925-01-181-4116
NSN 6240-01-053-0666
NSN 5996-01-158-5197
NSN 6685-00-156-3054
NSN 6320-00-036-3688
NSN 5920-01-604-8459