Flat top; cr-39; segment positioned 5 mm below and 5 mm in from geometric center for right and left lenses (porm 2 mm)
A transparent optical element consisting of a major blank and a bifocal segment. The blank and segment have been pressed in a glass mold to an approximate size and shape, and are ground and polished to a finished diopter curvature on one surface only.
Classification: Lens blanks (other than for spectacles) not optically worked, of glass, (optical elements)
NSN 6150-01-495-1369
NSN 5945-00-054-2419
NSN 5855-00-118-8762
NSN 5990-00-444-0612
NSN 2925-01-439-4451
NSN 7035-01-545-0834
NSN 6320-01-512-2031
NSN 5905-01-003-0867
NSN 6685-01-237-9757
NSN 5855-01-199-2046
NSN 6620-00-148-9613
NSN 5925-01-533-0656