Q. Point out the following parts of the breech-block:
Block. Carrier plate. Carrier plate ring. Locking spring. Lever handle. Threaded sectors. Slotted sectors. Extractor. Firing pin.
Q. How should a 3-inch R. F. breech-block be cared for--kind of oil, etc.
A. Same as for any other heavy gun. (See first part of book.)
Q. Describe how the extractor and firing pin work.
A. (This will have to be done at the gun.)
Q. Describe the action of the lever handle.
Q. Point out the following parts of the gun and mount (masking parapet mount):
Outer base. Inner base. Counterweights. Recoil-cylinder. Piston-rod. Pivot. Pivot yoke. Trunnions. Traversing clamp. Elevating clamp. Range drum. Cradle. Elevating gear. Sight. Night Sights. Ratchet lever. Lever pawl. Ratchet-wheel pawl. Pivot socket and clamp. Shield. Muzzle. Breech. Bore. Chamber.
Q. How are rapid-fire guns cared for and kept in working order?
A. Same as the 12", 10", 8", 6", etc. (Given under heading for second-class gunners, Gun-companies.)
Q. How many men constitute a gun detachment for the 3-inch R. F. gun (masking parapet mount) and give the posts of each?
A. Chief of detachment, gun-pointer, and 5 men.
POSTS. Chief of detachment, 2 yards to the right of the carriage, facing it.
Gun-pointer, immediately in rear of the shoulder piece, facing to the front.
No. 1, 2 feet to the right and rear of the breech facing it.
No. 2, 2 feet to the left and rear of the breech facing it.
No. 3, on the right of the gun, near the elevating clamp, facing to the front.
No. 4, 3 feet in rear of the breech facing it.
No. 5, near the ammunition recess, facing the gun.
The posts of the gun detachment as given above are for inspection and preparatory to the service of the gun.
The men resume their posts on the completion of any duty requiring them elsewhere.
The chief of detachment and gun-pointer go wherever their presence is necessary.
Q. Give the duties of the gun commander, chief of detachment, and gun-pointer.
A. _The gun commander_ indicates the target, repeats the commands "Commence firing" and "Cease firing," announces the kind of projectile to be used, the order of fire, and, in restricted fire, the number of shots and the firing interval. He is responsible to the battery commander for the condition of the material and the efficiency of the personnel of his command, sees that the guns, magazines, equipments, and implements are properly secured after the day's drill.