Matl cr-39; flat top; segment positioned 5 mm below and 5 mm in from geometric center for right and left lenses, plus or minus 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 6150-01-649-7924
NSN 5835-01-408-7576
NSN 7035-00-631-3782
NSN 5985-00-779-0485
NSN 6220-01-347-8643
NSN 5915-00-226-3403
NSN 5996-01-540-3576
NSN 5960-01-046-5953
NSN 6150-01-336-0311
NSN 5975-01-563-5999
NSN 5855-00-058-1293
NSN 5960-01-142-1995