A professional who adjusts interconnecting control mechanisms of gun to synchronize gun with gunners sight (telescope or range finder) and fire control computer. Responsibilities include:

• Lifts gun to work stand, using hoist, and connects electrical and hydraulic lines to power sources.
• Inserts borescope in muzzle of gun, and telescope and level in breech.
• Moves controls to level position of gun.
• Adjusts gunners quadrant to synchronize quadrant with gun at level position.
• Sets eccentrics within control mechanism in position level with gun and quadrant.
• Bolts control arm of ballistics computer to sighting adjustment controls.
• Sights through range finder and moves controls to align cross hairs of range finder on specified target.
• Looks through borescope in gun to verify alignment of gun bore on target.
• Adjusts eccentrics, and controls to regulate flow of electrical impulse into control instruments, to align gun and sight on specified target.