ALUMINUM 2024 OR 6061 SHELL;ANODIC FILM NONDYED;TEMPER T4 OR T6;0.680/0.685 RADIUS OUTSIDE;0.420/0.430 W;LAMPGROOVE 0.650/0.655 RADIUS X 0.210/0.220 W;180 DEG ARC MINUS 0.031/0.046 IN. AT CENTER;LAMP TRITIUM H3 IN GLASS VIAL 0.160 W X 0.510/0.515 INSIDE RADIUS;ENVELOPE 0.140/0.150 W X 0.090/0.110 THK;0.015/0.025 WALL THK;LACQUER 3 SIDES;GREEN LIGHT 520 MICROLAMBERT INITIALLY;DSAM 4145.8 APPLIES;RUBBER SHIMS