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 494 of 775
TM 9-2350-311-10
3-7 FIRE CONTROL ALINEMENT TESTS AND MEASUREMENTS — CONTINUED
3-7.3
Leveling Gun Trunnions — Continued
a. Plumbline Method-Continued
14 Set off 100 mils on M15 elevation quadrant (12) and elevate the cannon tube (6) manually until the
elevation bubble (15) centers.
3-90
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