1. ALL DIMENSIONS ARE IN MILLIMETERS. }VetaO2*
2. MATERIAL: OPTICAL GLASS PER MIL-G-174 Qj:`[#3?2
TYPE: HZK21 CDGM NO.623581 ?G|*=-8
NP 1.6230 ± V ± 58.2 vCj,aSW
STRIAE GRADE , ANNEAL Z+3j>_Ss
MELT NO. -D?-ctFYj^
3. 'P' PITCH POLISH TO TEST PLATE WITHIN CVa?L"lK
POWER AND IRREGULARITY INDICATED. OVy ZyZ#
4. MANUFACTURE PER MIL-O-13830 0vi)my;!
5. SURFACE QUALITY # Vq"Cf
6. 'C' MAGNESIUM FLUORIDE COATING PER MI dc]D 8KX
FOR MAX TRANSMISSION AT MILLI b@p3iq:
7. 'G' FINE GROUND & BLACKENED PER T^b62j'b5_
8. BEVEL EDGES AT 45 DEG TO MAX FA ]&oQ6
9. DIAMETER TO FLAT IS (REF) =~|:93]k
WITH SURFACE SAG OF ON SURFA