ARMY TM 9-1290-262-24&P
MARINE CORPS TM 00476C-24&P
AIR FORCE TO 49A7-3-72/74
EYEPIECE FOCUS
1 Direct aiming circle line-of-sight into colli-
mator.
2 Look into dioptometer eyepiece (1) and
turn eyepiece until reticle is in sharpest
focus.
3 Hold dioptometer (2) up to elbow telescope
eyepiece (3).
4 Slide dioptometer scale knob (4) until el-
bow telescope reticle is in sharpest focus.
5 Remove dioptometer (2). Dioptometer
scale (5) should read between -0.75 and
-1.0. If not, proceed to step 6.
6 Screw elbow telescope eyepiece in or out,
as required.
7 Repeat steps 4 thru 6 until dioptometer
scale (5) reads between -0.75 and -1.0.
