1. ALL DIMENSIONS ARE IN MILLIMETERS. $My%7S/3
2. MATERIAL: OPTICAL GLASS PER MIL-G-174 {wK98 >$a
TYPE: HZK21 CDGM NO.623581 `vUilh ^c
NP 1.6230 ± V ± 58.2 Kc0KCBd8];
STRIAE GRADE , ANNEAL "*<9)vQ6|
MELT NO. Lxs
3. 'P' PITCH POLISH TO TEST PLATE WITHIN IL&Mf9m
POWER AND IRREGULARITY INDICATED. }c$Zlb
4. MANUFACTURE PER MIL-O-13830 bF<FX_}!s!
5. SURFACE QUALITY ljQru ^(u
6. 'C' MAGNESIUM FLUORIDE COATING PER MI 5hg:@i',
FOR MAX TRANSMISSION AT MILLI ]haZ T\
7. 'G' FINE GROUND & BLACKENED PER DFcgUEq
8. BEVEL EDGES AT 45 DEG TO MAX FA )|zLjF$
9. DIAMETER TO FLAT IS (REF) ( hp 52Vse
WITH SURFACE SAG OF ON SURFA