1. ALL DIMENSIONS ARE IN MILLIMETERS. {TE0
2. MATERIAL: OPTICAL GLASS PER MIL-G-174 ,MOB+i(3*u
TYPE: HZK21 CDGM NO.623581 &v3r#$Hj[
NP 1.6230 ± V ± 58.2 #; }IHAR
STRIAE GRADE , ANNEAL Fk=_Q
LI
MELT NO. --",}%-
3. 'P' PITCH POLISH TO TEST PLATE WITHIN BFj@Z'7P
POWER AND IRREGULARITY INDICATED. 2MB\!fh
4. MANUFACTURE PER MIL-O-13830 b^hCm`2w*
5. SURFACE QUALITY Z2*hQ`eE
6. 'C' MAGNESIUM FLUORIDE COATING PER MI +=u*!6S
FOR MAX TRANSMISSION AT MILLI 8*6J\FE<p
7. 'G' FINE GROUND & BLACKENED PER /x-Ja[kL
8. BEVEL EDGES AT 45 DEG TO MAX FA YVu8/D@ o
9. DIAMETER TO FLAT IS (REF) !i}G>*XH,
WITH SURFACE SAG OF ON SURFA