1. ALL DIMENSIONS ARE IN MILLIMETERS. P")I)>Q6
2. MATERIAL: OPTICAL GLASS PER MIL-G-174 \
ku5%y
TYPE: HZK21 CDGM NO.623581 glLVT
i
NP 1.6230 ± V ± 58.2 h^g0|p5
STRIAE GRADE , ANNEAL h/ n(
MELT NO. e*Wk;D&
3. 'P' PITCH POLISH TO TEST PLATE WITHIN 1)k+v17]f5
POWER AND IRREGULARITY INDICATED. L2>e@p\>
4. MANUFACTURE PER MIL-O-13830 !JXiTI!
5. SURFACE QUALITY $z[S0C m
6. 'C' MAGNESIUM FLUORIDE COATING PER MI 1
tOslP@
FOR MAX TRANSMISSION AT MILLI qFWN._R
7. 'G' FINE GROUND & BLACKENED PER Ah1
9#0
8. BEVEL EDGES AT 45 DEG TO MAX FA t,r]22I,`
9. DIAMETER TO FLAT IS (REF) ~Ykn|$_"I
WITH SURFACE SAG OF ON SURFA