THE ROYAL ARTILLERY INSTITUTION. 
197 
Take off the limb with the short telescope attached to it. Place the 
flat of the limb against the tire of the wheel, and hammer with three or 
four sharp taps of the hammer the side opposite to that which you want 
the arrow to go. 
Remember, it is not the edge of the limb, but the flat part you are to 
hammer—about one-third of the limb’s length from the index. 
Try not to bend the limb up or down in hammering ; if it is bent, it 
can be set right with two pincers. Put on the limb ; observe the points 
—gun number is 41. 
The correction has been overdone ; hammer the other side, until 42j 
is given. 
N.B.—This operation will probably not be required once in three 
years. 
To ascertain the Range with only one Finder. 
Select your object and choose another square—(that is roughly at 
right angles)—to it. Lay on the observed object. 
Unlimber a second gun between the first one and the square object, 
dress its rear V, or better, the place where the centre of the white face 
of a finder would be on the square object. 
Lay this gun.' 
Then, successively point in each gun the main telescope of the 
instrument on the observed object, the short on the square object; 
note the gun numbers thus given; measure the distance between the 
guns. 
Set the tape on the roller as usual. From the gun number of the gun 
furthest from the square object, take the gun number of the gun nearest 
to the square object. 
Over the number so obtained is the range. 
Example : Distance between guns, 50. 
Gun number furthest from square object, 67. 
Gun number nearest square object, 6. 
67 
6 
61 
Over 61 on line E will be found the range 2945. 
If wished, the subtraction can be performed by the lower fiat face of 
the roller. 
Drill for 12-pr. B.L., 9 and 16-pr. M.L. Guns. 
Pivot Guns. 
No. 1 lays the gun by its ordinary sights (the tangent scale being at 
point blank for all guns except the 12-pr. B.L., when it should have 
elevation for 1000 yards). 
When the gun is roughly laid, he gives the word “ Forward, ” then 
he lays the right edge of the vertical cross-wire on the object, he then 
runs to the outer gun, and lays it likewise. 
No. 2 assists to traverse gun and reads. 
No. 3 runs out tape. 
No. 4 traverses. 
