514 
NOEDENFELT MACHINE GUN. 
Change of Elevation. 
a. Tlie changing of a gun from its greatest elevation of 19°, to its 
greatest depression of 25°, was executed by one man in 5 secs. 
b. The change from 45° horizontal angle to the right, to 45° to the 
left, together 90°, was executed by one man in two secs. 
Both manoeuvres {a and h) were also done by a man in five secs. 
The taking to pieces and remounting of the mechanism was done by 
one man, with slight assistance from a second, in 35 secs., and the 
changing of four spiral springs in 20 secs. 
N.B.—In all trials with direction perpendicular to target, the projectiles went 
clean through the target; with the elevation at acute angles, on the contrary, the 
holes were very long, and the plates bent in very much. 
With two and more plates put up, one behind the other, the projectiles penetrated 
the last plates mostly side on, with long and very irregular holes. 
