SYNCHRONIZATION AND BACKLASH CHECK OF 165 MM GUN WITH
GUNNER'S PERISCOPE M32C-RAMP METHOD (CONT)
Insert breech boresight 8769218 into breech chamber (TM-10).
Place right side of M17A1 binoculars (1) in line with breech boresight pin hole (2) to
look at target.
While looking through breech boresight hole (2) with binoculars (1), manually position
gun without over travel so that cross formed by threads (3) on gun muzzle is lined up
with target aiming point (TM-10).
GO TO FRAME 3
Para 3-4 Cont