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A narrow-gauge railway is a railway with a track gauge narrower than standard 1,435 mm. Most narrow-gauge railways are between 600 mm and 1,067 mm.
The Tellermine 43 was a German circular steel cased anti-tank blast mine used during the Second World War. It was a simplified version of the Tellermine 42, which enabled simpler production techniques. Between March 1943 and the end of World War II, over 3.6 million Tellermine 43s were produced by Germany. Copies of the mine were produced by several countries including Denmark (M/47), France and Yugoslavia (TMM-1).
The TM-57 mine is a large, circular Soviet metal-cased blast anti-tank mine. It can either be triggered by a pressure or a tilt-rod fuze. A development of the TM-46 mine, it is found in Africa, the Middle East, and South East Asia.
The TM-46 mine is a large, circular, metal-cased Soviet anti-tank mine. It uses either a pressure fuze or tilt-rod, which is screwed into the top. Anti-tank mines with this type of fuze were capable of inflicting much more damage to armored vehicles. The TMN-46 is a variant of the mine fitted with a secondary fuze well on the bottom which is slightly off-set from the centre of the mine. This secondary fuze well can be fitted with a pull-fuze which functions as an anti-handling device. The mine was used by the North Vietnamese forces during the Vietnam War, and is found in many countries in Africa, the Middle East and South East Asia.
The PT Mi-Ba-II is a large Bakelite cased Czechoslovakian anti-tank blast mine. The mine is unusual in that it has two plunger fuses instead of a pressure plate. The plunger fuses give the mine resistance to overpressure, also the plastic body makes it difficult to detect.
The PT Mi-Ba-III is a large Bakelite cased circular Czechoslovakian anti-tank blast mine. It is no longer produced but it is found in Angola, Kuwait, Mozambique, and Namibia. A Bulgarian copy of the mine, the PMT-BA-III exists.
The M15 mine is a large circular United States anti-tank blast mine, first deployed during the Korean War. Essentially, it is a larger version of the M6A2 anti-tank mine, which it replaced. Although the M15 has been superseded by the M19 mine, the U.S. retains large stocks of M15s because they are still regarded as reliable and effective weapons. When used against main battle tanks the M15 is primarily a "track-breaker" which creates mobility kills, but has a comparatively small likelihood of causing crew fatalities. However, when used against lighter vehicles such as APCs or unarmored vehicles such as trucks the damage inflicted is much more severe.
The Panzer-Stabmine 43 was a German anti-tank mine, together with the Hohl-Sprung mine 4672 it was the first mine to combine a shaped charge warhead with a tilt-rod fuze. The mine was developed during the Second World War. The mine consisted of a wine glass shaped metal main body mounted on a wooden post, with a tilt rod holding arm projecting to one side. It used a 125 mm diameter warhead with 1.6 kg of explosive, and a combination pressure/tilt fuze.
The Hohl-Sprung Mine 4672 or Hohlladungs-Spring-Mine 4672 was a German anti-tank mine, together with the Panzer stab 43. Developed during the Second World War it was the first landmine to combine a shaped charge anti-tank warhead with a tilt rod fuze.
The M21 is a circular United States anti-tank landmine that uses a Misznay Schardin effect warhead. The mine uses an M607 pressure fuse, which can be adapted as a tilt rod fuze. The mine is triggered either by pressure, or by the tilt rod being forced beyond 20 degrees from the vertical by a force of more than 1.7 kg, either of these actions results in pressure being transferred via a bearing cap to a Belleville spring, which inverts, driving the firing pin into the M46 detonator. The M46 charge first ignites a black powder charge, which blows off the mine's cover, and clears any earth or debris that may have been on top of the mine. A fraction of a second later the main warhead detonates, driving and compressing a steel plate upwards, with enough force to penetrate 76 mm of armour at a distance of 530 mm. Approximately 200,000 M21 mines were produced in the U.S. and licensed copies, the K441 and K442, were produced in South Korea.
The No 6 mine is an Israeli metal-cased anti-tank blast mine. It is a direct copy of the Russian TM-46 mine, the only notable difference being the filling cap, which is domed on the TM-46 and flat on the No 6. It can be fitted with the No 61 pressure fuze or a No 62A tilt rod fuze. The mine is found in the Falkland Islands, Israel, Lebanon and Oman.
The Model 52 mine is a Swedish circular plywood cased anti-tank blast mine. It is in service with the Swedish army. The mine can be fitted with a number of different fuzes and pressure plates including a three pronged plate and a pentagonal pressure spider and a tilt-rod fuze.
The APM-1, APM-2, APM-3, APM 19, and APM 29 are Austrian directional fragmentation mines similar to the United States Claymore mine. The mine's cases are made from moulded plastic and have convex faces. They contain a matrix of 5 millimeter diameter steel balls weighing 0.5 gram laid over a Composition B charge. When triggered the mines project the fragments in a horizontal arc of approximately 60 degrees.
The PT Mi-U is a circular Czech anti-tank mine with a Misznay Schardin effect warhead. It can be used with a conventional pressure fuze or a tilt rod fuze.
The TMK-2 is a Soviet steel cased anti-tank mine. It uses a tilt-rod fuze combined with a shaped charge to attack the belly of vehicles as they pass over the mine. It was originally designed in 1955, but is now obsolete. The mine consists of a case shaped like two truncated cones joined at the base. The MVK-2 tilt rod assembly is held to one side of the mine. The lower truncated cone contains the main charge, and dished metal charge liner.
The Magenta class consisted of two broadside ironclads built for the French Navy in the early 1860s. They were the only ironclad two-deckers ever built, and the first ironclads to feature a naval ram.
The Spanish ironclad Numancia was an armored frigate bought from France during the 1860s for service with the Royal Spanish Navy. The name was derived from the Siege of Numantia, in which Roman expansion in the Iberian Peninsula was resisted. She was the first ironclad to circumnavigate the Earth. She saw service in the Chincha Islands War and Cantonal Revolution.
The Kongō-class ironclads (金剛型) were a pair of armored corvettes built for the Imperial Japanese Navy (IJN) by British shipyards in the 1870s. A British offer to purchase the two ships during the Russo-Turkish War in 1878 was refused. They became training ships in 1887 and made training cruises to the Mediterranean and to countries on the edge of the Pacific Ocean. The ships returned to active duty during the First Sino-Japanese War of 1894–95 where one participated in the Battle of the Yalu River and both in the Battle of Weihaiwei. The Kongō-class ships resumed their training duties after the war, although they played a minor role in the Russo-Japanese War of 1904–05. They were reclassified as survey ships in 1906 and were sold for scrap in 1910 and 1912.
Hegar dilators are dilators used to treat vaginismus, induce cervical dilation, and for inflatable penile implant procedures.
The Broken Kilometer is a permanent art installation created by Walter De Maria inside a street-level storefront in the SoHo neighborhood of New York City. The piece consists of 500 round solid brass rods, 2 meters long by 2 inches (51 mm) in diameter, laid on the floor in 5 rows of 100 rods each. The space between the rods increase by 5 millimeters. The first two rods of each row are placed 80 millimeters apart, the last two rods are placed 570 millimeters apart. The work is illuminated with metal-halide stadium lights. Commissioned by the Dia Art Foundation in 1979, it has been on view to the public ever since. The Broken Kilometer is maintained by the Dia Art Foundation as one of the eleven locations and sites they manage.
References
- Jane's Mines and Mine Clearance 2005-2006
- PT Mi-P mine at ORDATA
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