1. ALL DIMENSIONS ARE IN MILLIMETERS. D59q/@
2. MATERIAL: OPTICAL GLASS PER MIL-G-174 +w7U7"
xQ
TYPE: HZK21 CDGM NO.623581 h;#046-7
NP 1.6230 ± V ± 58.2 #].qjOj
STRIAE GRADE , ANNEAL >& 4) :
MELT NO.
LJ;&02w@
3. 'P' PITCH POLISH TO TEST PLATE WITHIN *fs[]q'Q
POWER AND IRREGULARITY INDICATED. X`3_ yeQc
4. MANUFACTURE PER MIL-O-13830 +_{cq@c
5. SURFACE QUALITY |
TG 6-e_
6. 'C' MAGNESIUM FLUORIDE COATING PER MI ,6X__Z#rGT
FOR MAX TRANSMISSION AT MILLI 2$MoKOx8$
7. 'G' FINE GROUND & BLACKENED PER w?zy/+N~
8. BEVEL EDGES AT 45 DEG TO MAX FA
iDx(qdla
9. DIAMETER TO FLAT IS (REF) d>NO}MR
WITH SURFACE SAG OF ON SURFA