1. ALL DIMENSIONS ARE IN MILLIMETERS. |eT?XT<=o
2. MATERIAL: OPTICAL GLASS PER MIL-G-174 (XYYbP
TYPE: HZK21 CDGM NO.623581 3\FPW1$i|[
NP 1.6230 ± V ± 58.2 n\k6UD
STRIAE GRADE , ANNEAL Gw3eO&X3i
MELT NO. 41 sClC"
3. 'P' PITCH POLISH TO TEST PLATE WITHIN }m NP[L
POWER AND IRREGULARITY INDICATED. LQ4GQqS*
4. MANUFACTURE PER MIL-O-13830 WtF
5. SURFACE QUALITY envu}4wU=e
6. 'C' MAGNESIUM FLUORIDE COATING PER MI yP2[!vYw
FOR MAX TRANSMISSION AT MILLI S%n5,vwE
7. 'G' FINE GROUND & BLACKENED PER \zA$|)
x
8. BEVEL EDGES AT 45 DEG TO MAX FA N\b%+vR
9. DIAMETER TO FLAT IS (REF) pQr `$:ga
WITH SURFACE SAG OF ON SURFA