QF 1-pounder pom-pom
| QF 1 pdr Mark I & II ("pom-pom") | |
|---|---|
Mk II gun dated 1903, on anti-aircraft mounting, at the Imperial War Museum, London. | |
| Type | Autocannon |
| Place of origin | United Kingdom |
| Service history | |
| In service | 1890s–1918 |
| Used by | South African Republic British Empire Khedivate of Egypt German Empire Paraguay Belgium United States Finland Bolivia China El Salvador Guatemala Honduras Nicaragua |
| Wars | Mahdist War Spanish–American War Second Boer War 1904 Paraguayan Revolution Herero Wars World War I Finnish Civil War Chaco War Winter War Second Sino-Japanese War |
| Production history | |
| Designer | Hiram Maxim |
| Designed | Late 1880s |
| Manufacturer | Maxim-Nordenfelt Vickers, Sons & Maxim DWM |
| Variants | Mk I, Mk II |
| Specifications | |
| Mass | 410 pounds (186.0 kg) (gun & breech) |
| Length | 6 ft 1 in (1.85 m) (total) |
| Barrel length | 3 ft 7 in (1.09 m) (bore) L/29 |
| Shell | 37 x 94R Common Shell |
| Shell weight | 1 lb (0.45 kg) |
| Calibre | 37-millimetre (1.457 in) |
| Barrels | 1 |
| Action | automatic, recoil |
| Rate of fire | ~300 rpm (cyclic) |
| Muzzle velocity | 1,800 ft/s (550 m/s) |
| Maximum firing range | 4,500 yards (4,110 m) (Mk I+ on field carriage) |
| Filling weight | 270 grains (17 g) black powder |
The QF 1 pounder, universally known as the pom-pom due to the sound of its discharge, was a 37 mm British autocannon, the first of its type in the world. It was used by several countries initially as an infantry gun and later as a light anti-aircraft gun.