Special Features:

Surface quality of clear area to be 80-50; clear aperture 1.3; temp test, exposure to minus 80 degrees f for 5 hours and return to room temp, no evidence of edge separation to cemented components

Properties:

An optical element consisting of a polished optical glass disk to which is bonded a reticle, optical instrument and a prism, optical instrument. A right-hand and a left-hand assembly are used in an optical system to provide three dimensional vision of an object or target.