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 5996-00-787-7271
NSN 6145-01-493-6364
NSN 6145-01-472-9867
NSN 5998-00-898-2372
NSN 6240-01-126-9167
NSN 7035-00-420-1310
NSN 5996-01-314-6479
NSN 5945-00-771-8115
NSN 5905-01-386-6488
NSN 5835-00-764-4388
NSN 6135-01-156-4627
NSN 5920-01-087-6073