RECOIL MECHANISM---15-POUNDER GUN NO. 12.
210
Screw jacks under rear end of slide.
Applied loads.	Gauge readings.		Remarks.
	Direct movement.	Set.	
Pounds. 1,000 60,000 60,000 1,000	Inch.	Inch. .0005	Slide and eye-bar fixtures jarred with hammer.
	.0205 .0207		
			
		.0007	
			
Iron dog removed.
Slide lubricated with Albany grease and graphite.
1,000		.0008
60,000	. 0212	
1,000		.0008
60,000	.0213	
1,000		.0008
Iron dog returned to place.
1,000 60,000 1,000 60,000 60,000 1,000 60,000 1,000		.0008	
			
		.0008	
			
			Lug on slide jarred with hammer.
		.0008	
	.0031 ;.		Lug on slide jarred continuously while load was advanced. Micrometer evidently disturbed in its position.
		-.0244	
			....
Suspension sling of crane lowered and screw jacks put under trunnions and a part of the weight of the gun carried by the jacks.
1,000 60,000 60,000	-.0036 -.0038	-.0246	Muzzle of gun raised by a screw jack. Jacks removed from under trunnions.
Jack removed and part of weight of gun carried by suspension sling־ of crane.
Recoil cylinder opened and packing removed.
Again assembled and test resumed.
1,000		-.0248	
60,000	- .Ò045