MIL-L-50064F, MILITARY SPECIFICATION: LENS, OPHTHALMIC, SIMPLE (01-NOV-1977) [MIL-L-0050064F, USED IN LIEU OF MIL-L-50064E AND MIL-L-50064C] [CANCELLED W/ NO S/S DOCUMENT]

MIL-L-50064F, MILITARY SPECIFICATION: LENS, OPHTHALMIC, SIMPLE (01-NOV-1977) [MIL-L-0050064F, USED IN LIEU OF MIL-L-50064E AND MIL-L-50064C] [CANCELLED W/ NO S/S DOCUMENT]., This specification covers three types of cast, cylindrical, plastic lenses.