1. ALL DIMENSIONS ARE IN MILLIMETERS. n`KY9[0U=
2. MATERIAL: OPTICAL GLASS PER MIL-G-174 aDCwI :Li(
TYPE: HZK21 CDGM NO.623581 svSVG:48
NP 1.6230 ± V ± 58.2 t&p|Ynz?i
STRIAE GRADE , ANNEAL 1&2>LE/P
MELT NO. E.f%H(b
3. 'P' PITCH POLISH TO TEST PLATE WITHIN
3CJwj
POWER AND IRREGULARITY INDICATED. 3oqHGA:}
4. MANUFACTURE PER MIL-O-13830 ElXFeJ%[G
5. SURFACE QUALITY HTtnXBJ)*H
6. 'C' MAGNESIUM FLUORIDE COATING PER MI r/1(]#kOX
FOR MAX TRANSMISSION AT MILLI \DzGQ{`~m
7. 'G' FINE GROUND & BLACKENED PER <QvOs@i*
8. BEVEL EDGES AT 45 DEG TO MAX FA P* o9a
9. DIAMETER TO FLAT IS (REF) @@%ataUSBT
WITH SURFACE SAG OF ON SURFA