TM-9-2350-311-10

HOWITZER, MEDIUM, SELF-PROPELLED, 155MM; M109A2, M109A3, M109A4 AND M109A5

TECHNICAL MANUAL; OPERATOR’S MANUAL

NOVEMBER 1994

TM-9-2350-311-10 - Page 323 of 775

TM 9-2350-311-10

2–12 PREPARATION FOR FIRING — CONTINUED

2-12.7

Direct Fire Procedures — Continued

b. Two Man/Two Sight System — Continued

3 Gunner centers M117/M117A2 panoramic telescope (1) cross-level (2) bubble, sets azimuth counter (3)

to 3200, and turns direct fire bar knob (4) of azimuth knob (5) to direct position to engage 5.0 mils per

click sight mechanism.

4 If central laying is used, gunner places announced lead on azimuth counter (3), sights through eyepiece

(6) and traverses cannon tube until vertical hairline of M117/M117A2 panoramic telescope reticle (7)

centers on the target. If reticle method is used, gunner places vertical hairline left or right of target, the

number of mils lead announced by chief of section.

2-225