TM 9-2350-261-10
7. Loosen clamping screw and
adjust headrest.
8. Turn periscope to the right or
left, as needed, and tighten
azimuth locking knob.
9. Adjust periscope in elevation and
tighten locking lever.
NOTE
Some M19 periscopes have
adjusting
screw to
focus
eyepiece. Others have automatic
focusing. Both are shown below.
10. Focus eyepiece with right and
left adjusting screws.
2-210