1. ALL DIMENSIONS ARE IN MILLIMETERS. Od)Uv1
2. MATERIAL: OPTICAL GLASS PER MIL-G-174 #o=y?(
TYPE: HZK21 CDGM NO.623581 03|PYk 6EW
NP 1.6230 ± V ± 58.2 +DW~BS3
STRIAE GRADE , ANNEAL y~Bh
MELT NO. @)UZ@ ~R
3. 'P' PITCH POLISH TO TEST PLATE WITHIN xHUsFms
POWER AND IRREGULARITY INDICATED. gQ o]
4. MANUFACTURE PER MIL-O-13830 j| v%)A
5. SURFACE QUALITY t9,\Hdo
6. 'C' MAGNESIUM FLUORIDE COATING PER MI Ee)T1~;W
FOR MAX TRANSMISSION AT MILLI wg7V-+@i
7. 'G' FINE GROUND & BLACKENED PER X>1,!I9
8. BEVEL EDGES AT 45 DEG TO MAX FA 3)F|*F3R
9. DIAMETER TO FLAT IS (REF) KK1gNC4R
WITH SURFACE SAG OF ON SURFA