TM 9-1240-401-34&P
9 Apply sealing compound (item 13, appx B) to
setscrew holes.
e. RETICLE ACCURACY INSPECTION
1 View through M118A2/M118A3 elbow telescope
eyepiece (1). Check that angular value between
zero range mark and maximum range mark (60-mil
line) is 60 0.5 mils. Check that boresight mark of
the M118A2/M118A3 elbow telescope reticle is on
the plus 20-mil mark of the collimating projector (2)
and the 60-mil mark of the M118A2/M118A3 elbow
telescope reticle is on the 40-mil mark of the
collimating projector (2).
2
If error exists, send M118A2/M118A3 elbow tele-
scope to depot maintenance.
View through M118A2/M118A3 elbow telescope eye-
piece (1) and check that the boresight mark is 20 roils (
1 roil) above the geometric axis of the target of collimat-
ing projector (2) and that the vertical reticle line is in co-
incidence with the vertical target line within 0.5 mil.
I
g. LEVEL ADJUSTMENT
Check that level (1) vial bubble is within the center
1
graduation marks of the level(1) vial.
2
Loosen threaded ring (2).
3
Engage fabricated eccentric tool into holder (3) and
threaded ring (2).
4
Insert a straight blade screwdriver through the cen-
ter hole in the eccentric tool.
5
Adjust cam (4) until level vial bubble is centered.
6
Tighten threaded ring (2), being careful not to dis-
turb setting of level vial.
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