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The bore had a diameter of 42 mm (1.7 in) at the chamber, but tapered down to 28 mm (1.1 in) at the muzzle. Production was terminated in June 1942, after the delivery of 313 guns. By November 1943, 47 remained in service.
A Hotchkiss 42 mm gun The Hotchkiss Revolving Cannon picture published 1874 Hotchkiss 5-barrel revolving cannon, Fort Copacabana A ship mounted Hotchkiss cannon. The Hotchkiss gun can refer to different types of the Hotchkiss arms company starting in the late 19th century. It usually refers to the 1.65-inch (42 mm) light mountain gun.
The 7.5 cm KwK 42 L/70 (from 7.5 cm Kampfwagenkanone 42 L/70) was a 7.5 cm calibre German tank gun used on German armoured fighting vehicles in the Second World War. The gun was the armament of the Panther medium tank and two variants of the Jagdpanzer IV self-propelled anti-tank gun .
The Swiss MG 51 or 7.5 mm Maschinengewehr 1951 was based on the design of the MG 42 chambered for 7.5×55mm Swiss GP 11. The final design, which appeared in 1950, was in most respects still similar to the MG 42, although many components were produced by machining instead of stamping, which increased the weight, the stability and the production ...
The M42 lens mount is a screw thread mounting standard for attaching lenses to 35 mm cameras, primarily single-lens reflex models. It is more accurately known as the M42 × 1 mm standard, which means that it is a metric screw thread of 42 mm diameter and 1 mm thread pitch.
In 1979, the caliber and case length choices were determined and China started the development of the 5.8×42mm cartridge and finalized the cartridge in 1987. The 5.8×42mm / DBP87 was designed to replace the Soviet 7.62×39mm cartridges used by the People's Liberation Army (PLA).
The M13 was constructed of riveted steel plates as follows: 30 mm front (as the M11), 42 mm on turret front (30 mm for the M11), 25 mm on the sides (the M11 had only 15 mm), 6 mm bottom (making it very vulnerable to mines) and 15 mm on top. [7]
The 7.5 cm Infanteriegeschütz 42 (7.5 cm IG 42) was an infantry support gun, used by Germany, during World War II.The requirement for this weapon came out of combat experience in 1940 when the existing IG 18 was felt to be outdated.