1. ALL DIMENSIONS ARE IN MILLIMETERS. ANPG3^w
2. MATERIAL: OPTICAL GLASS PER MIL-G-174 `x=kb;
TYPE: HZK21 CDGM NO.623581 _3
[E$Lg
NP 1.6230 ± V ± 58.2 m@nGXl'!
STRIAE GRADE , ANNEAL @dQr^'h
MELT NO. =3,<(F5Y[
3. 'P' PITCH POLISH TO TEST PLATE WITHIN =x w:@(]{
POWER AND IRREGULARITY INDICATED. jEKa9rt
4. MANUFACTURE PER MIL-O-13830 07^.Z[(pCt
5. SURFACE QUALITY T\wOGaCW
6. 'C' MAGNESIUM FLUORIDE COATING PER MI _x5-!gK
FOR MAX TRANSMISSION AT MILLI R@WW@ Of
7. 'G' FINE GROUND & BLACKENED PER ruqE]Hx9(
8. BEVEL EDGES AT 45 DEG TO MAX FA vasw@Uto)
9. DIAMETER TO FLAT IS (REF) '_g&!zi8~
WITH SURFACE SAG OF ON SURFA