1. ALL DIMENSIONS ARE IN MILLIMETERS. Zygu/M6
2. MATERIAL: OPTICAL GLASS PER MIL-G-174 K.Tob,5`
TYPE: HZK21 CDGM NO.623581 B
*%ey?
NP 1.6230 ± V ± 58.2 Vw]!Kb7tA
STRIAE GRADE , ANNEAL lokKjs
MELT NO. nh*6`5yj
3. 'P' PITCH POLISH TO TEST PLATE WITHIN HZqk)sN
POWER AND IRREGULARITY INDICATED. a:Nf+t
4. MANUFACTURE PER MIL-O-13830 h@PE:=
5. SURFACE QUALITY b/?)_pg
6. 'C' MAGNESIUM FLUORIDE COATING PER MI 54].p7
FOR MAX TRANSMISSION AT MILLI |k^C-
7. 'G' FINE GROUND & BLACKENED PER RT|1M"?$
8. BEVEL EDGES AT 45 DEG TO MAX FA ;Z); k`j
9. DIAMETER TO FLAT IS (REF) #>6Jsnv1
WITH SURFACE SAG OF ON SURFA