Material steel Total length 7.31 feet Calibre 3.2 inches Weight 794 pounds Grooves 24 Twist of rifling, increasing { 1 turn in 50 to { 1 turn in 25 calibres Axis of trunnions above ground 3.56 feet Powder-chamber cylindrical Vent axial Preponderance 31 lbs. Muzzle velocity 1685 ft.-sec. Maximum range for shrapnel 6613 yards Distance between sights 30.7 inches This gun consists of tube (_g_), jacket (_h_), and breech mechanism, De Bange obturator, vent-bushing of copper. The jacket, trunnion-ring, base-ring, and sleeve, of the model of 1885, form one piece, and the key-ring is omitted, as the tube and jacket are locked firmly together by shoulders (_a_, _b_, _c_) in rear and shoulders in front, with a projection on the tube that fits into a corresponding recess in the jacket. _d_ is the powder-chamber, _f_ the slope from no lands to maximum lands, and _e_ the connecting slope for seat of rotary band. The vent-cover is a pin working in a slot in the face of the carrier-ring. (See Fig. 36.) SIGHTS. [Illustration: FIG. 38.] [Illustration: FIG. 39.] [Illustration: FIG. 40.] The =Front Sight= (Fig. 40) is attached to the right rim-base, and consists of the base _a_, the standard _b_, and the cylinder _c_, all formed in one piece. The cylinder _c_ is a bushing open at both ends, the interior being formed of two conical frustums _c′_ joined at their smaller bases and having at this junction cross-wires (+), _d_, of platinum, which give the exact centre of the sight. In the new sights the cross-wires of watch-spring are placed diagonally (X). The cross-wires are used with the peep of the breech-sight, and the point e on top is used with the open sight. [Illustration: FIG. 41.]