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 6220-01-495-2183
NSN 5985-01-513-1876
NSN 5935-00-846-6291
NSN 5920-01-550-9545
NSN 6620-01-359-9916
NSN 5895-00-075-2634
NSN 5960-01-392-6982
NSN 6320-01-519-8767
NSN 2925-01-424-0235
NSN 6150-00-515-0764
NSN 6610-01-293-9838
NSN 5835-00-198-4936