Axle Trail, consisting of— Flasks (right and left) Tool box Elevating gear transom Rear sight box Spade Spade Edge Float Handspike fulcrum Cradle, head, rear Gun slides or Guide Rails Cradle Pintle Traversing lug Rear clip Lug for elevating and traversing lock Bracket seat, firing handle Quadrant fastening Rear-sight bracket support Front-sight bracket support Spring-support guides Retaining ring, with hasp and fastening Cradle head, front Shoulder guard Cradle brush Recoil-indicator throw Recoil indicator Cylinder head Cylinder with cylinder end screwed in Cylinder end stud and nut Counter-recoil buffer Rings, packing Gland Piston rod, with plug, screwed in Piston Piston-rod nut Filling plug with gasket Drain plug Spring support Counter-recoil springs Rocker Cradle Pintle socket Elevating and traversing lock Traversing mechanism, consisting of— Traversing-gear case Traversing plate Handwheel with handle and spindle Traversing shaft Traversing-shaft bearing in two parts Traversing link with bushing Traversing-link pivot with nut Azimuth pointer and scale Elevating mechanism, consisting of— Elevating pin Inner elevating screw Outer elevating screw Wheels guards Trail handles Trail seats Trail-seat supports Sponge-staff socket Name plate Handspike Lunette Cradle, consisting of— Cradle body Elevating bevel gear Elevating bevel pinions Elevating crank shafts, with handles Elevating screw cover Axle seats, include— Seat arms Seat-arm guards Foot rests Tie rods Shield braces Apron shield Apron latches Main shield, consisting of— Main shield Hood Shutter, open-sight port Shutter, panoramic-sight port Top shield, consisting of— Top shield Top shield fastenings Road brake, includes— Brake beams Brake shoes Springs with covers Brake rods Brake lever Brake shaft Brake segment with two segment racks Ammunition carriers Range quadrant case Panoramic sight case Front sight Rear sight, consisting of— Rear-sight bracket with shank socket Rear-sight shank Panoramic sight Range quadrant Wheels, consisting of— Felloe, segments Spokes Tires Hub boxes Hub liners Hub-latch plungers Oil Valve Carriage bolts and nuts Hub bands Hub caps Wheel fastenings Plugs THE 3-INCH GUN (CAISSON) LIMBER. The =limber= is of metal throughout excepting the spokes and felloes of the wheels. The principal parts are the wheels, axle, pintle, frame, ammunition chest, pole, doubletree, singletrees, and neck yoke.