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British Standard Ordnance Weights And Measurements
The British standard ordnance weights and measurements for the artillery were established by the Master General of Ordnance in 1764, and these were not altered until 1919, when the metric system was additionally introduced. This system has largely been replaced by defining the weapon in terms of the measurement of the calibre, which is the standard today for most weapon systems in use by the world's armed forces. The 18th century standards were based on projectile weight, and dated back to use of muzzle loaded cannons which fired solid cannonballs. The designations bore only an approximate relationship to the actual weight of the projectile when it was applied to modern artillery. The table below lists the metric and Imperial calibres of various British weapons, which utilised the standard after 1919: Terminology When used with British standard nomenclature: * BL is short for "Breech Loading", but generally means ''not'' QF, i.e. separate cordite bags rather than a cartridge ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Master General Of Ordnance
The Master-General of the Ordnance (MGO) was a very senior British military position from 1415 to 2013 (except 1855–1895 and 1939–1958) with some changes to the name, usually held by a serving general. The Master-General of the Ordnance was responsible for all British artillery, engineers, fortifications, military supplies, transport, field hospitals and much else, and was not subordinate to the commander-in chief of the British military. In March 2013 the holder was titled as "Director Land Capability and Transformation", but still sat on the Army Board as Master-General of the Ordnance; in September 2013 the post was eliminated. History The Office of Armoury split away from the Privy Wardrobe of the Tower (of London) in the early 15th century. The Master of the Ordnance came into being in 1415 with the appointment of Nicholas Merbury by Henry V. The Office of Ordnance was created by Henry VIII in 1544 and became the Board of Ordnance in 1597. Its head was the Master-Genera ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
15 Pounder (other)
15 pounder can refer to several British and US weapon systems: *Ordnance BL 15 pounder *Ordnance BLC 15 pounder The Ordnance BLC 15-pounder gun (BLC stood for BL Converted) was a modernised version of the obsolete BL 15-pounder 7 cwt gun, incorporating a recoil and recuperator mechanism above the barrel and a modified quicker-opening breech. It was develo ... * Ordnance QF 15 pounder * 3-inch gun M1903, also M1898 and M1902 seacoast guns {{disambig ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Glossary Of British Ordnance Terms
This article explains terms used for the British Armed Forces' ordnance (i.e.: weapons) and also ammunition. The terms may have slightly different meanings in the military of other countries. BD Between decks: applies to a naval gun mounting in which part of the rotating mass is below the deck, and part of it is above the deck. This allows for a lower profile of turret, meaning that turrets need not be superfiring (i.e. they can be mounted on the same deck and not obstruct each other at high angles of elevation.) BL The term BL, in its general sense, stood for breech loading, and contrasted with muzzle loading. The shell was loaded via the breech (i.e. the gunner's end of the barrel, which opened) followed by the propellant charge, and the breech mechanism was closed to seal the chamber. Breech loading, in its formal British ordnance sense, served to identify the gun as the type of rifled breechloading gun for which the powder charge was loaded in a silk or cloth bag and the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Caliber
In guns, particularly firearms, caliber (or calibre; sometimes abbreviated as "cal") is the specified nominal internal diameter of the gun barrel Gauge (firearms) , bore – regardless of how or where the bore is measured and whether the finished bore matches that specification. It is measured in inches or in millimetres, millimeters. In the United States it is expressed in hundredths of an inch; in the United Kingdom in thousandths; and elsewhere in millimeters. For example, a "45 caliber" firearm has a barrel diameter of roughly . Barrel diameters can also be expressed using metric dimensions. For example, a "9 mm pistol" has a barrel diameter of about 9 millimeters. Since metric and US customary units do not convert evenly at this scale, metric conversions of caliber measured in decimal inches are typically approximations of the precise specifications in non-metric units, and vice versa. In a rifling , rifled barrel, the distance is measured between opposing Rifling#C ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
60 Pounder
The Ordnance BL 60-pounder was a British 5 inch (127 mm) heavy field gun designed in 1903–05 to provide a new capability that had been partially met by the interim QF 4.7 inch Gun. It was designed for both horse draft and mechanical traction and served throughout the First World War in the main theatres. It remained in service with British and Commonwealth forces in the inter-war period and in frontline service with British and South African batteries until 1942 being superseded by the BL 4.5 inch Medium Gun. History Origin and Use The effective use of modern heavy field guns by the Boers during the Second Boer War (1899–1902) was a revelation to armies in Europe including the British. They were impressed by their mobility and range. Britain used some heavy guns in that war under ad hoc arrangements. After the capture of Pretoria in 1900 Lord Roberts, the commander-in-chief in South Africa (and an artillery officer), had stated the requirements of a heavy fiel ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ordnance QF 32 Pounder
The Ordnance QF 32 pounder or (32-pdr) was a British 94 mm gun, initially developed as a replacement for the Ordnance QF 17-pounder, Ordnance QF 17-pdr anti-tank gun. The only use of the 32-pounder was as the armament for the pilot vehicles of the Tortoise heavy assault tank. Development Development started in October 1942, due to a Chief of the General Staff (United Kingdom), General Staff order for a successor to the Ordnance QF 17-pounder, 17-pdr gun. Basic requirements involved the new gun to be "at least 25% more effective" than the 17-pdr. Initial focus was on development of a 55-pdr gun, although advancements in 17-pdr ammunition meant the advantages that would be secured by the 55-pdr were no longer as desirable, while the 55-pdr would suffer from considerable disadvantages such as the difficulties in the handling and stowage of ammunition. Other options considered included a 76 mm (3-inch) 17-pdr firing a Armour-piercing_ammunition#APCR_and_HVAP, Armour Piercing ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ordnance QF 25 Pounder
The Ordnance QF 25-pounder, or more simply 25-pounder or 25-pdr, was the major British field gun and howitzer during the Second World War. Its calibre is 3.45-inch (87.6 mm). It was introduced into service just before the war started, combining both high-angle and direct-fire abilities, a relatively high rate of fire, and a reasonably lethal shell in a highly mobile piece. It remained the British Army's primary artillery field piece well into the 1960s, with smaller numbers serving in training units until the 1980s. Many Commonwealth of Nations countries used theirs in active or reserve service until about the 1970s and ammunition for the weapon is currently being produced by Pakistan Ordnance Factories. Initial production was slow, but by 1945, over 12,000 had been manufactured. The 25-pounder was probably the most outstanding field artillery piece used by British and Commonwealth forces in the Second World War, being durable, easy to operate and versatile. Design The desig ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ordnance QF 20 Pounder
The Ordnance QF 20 pounder (known as 20 pounder, 20 pdr or simply 20-pr) was a British 84 mm (3.307 inch) tank gun. It was introduced in 1948 and used in the Centurion main battle tank, Charioteer medium tank, and Caernarvon Mark II heavy tank. After the 20 pounder gun was found to have inadequate performance against the Soviet T-54 the gun was mostly replaced in service by the larger calibre 105 mm L7 gun. Design and development The gun was developed by the Royal Ordnance Factories. As fitted to the Charioteer, it ran through two models: * Model A without a fume extractor. * Model B with a fume extractor. The L7 105 mm tank gun was developed from the 20 pounder. In 1954, the original version of the 105 mm was made by re-boring the tube of a 20 pounder barrel. Service history The gun was fitted predominantly to the Centurion tank, seeing action with British and Australian forces during the Korean and Vietnam War. When a Soviet T-54A main battle tank w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
18 Pounder
The Ordnance QF 18-pounder,British military traditionally denoted smaller ordnance by the weight of its standard projectile, in this case approximately or simply 18-pounder gun, was the standard British Empire field gun of the First World War-era. It formed the backbone of the Royal Field Artillery during the war, and was produced in large numbers. It was used by British Forces in all the main theatres, and by British troops in Russia in 1919. Its calibre (84 mm) and shell weight were greater than those of the equivalent field guns in French (75 mm) and German (77 mm) service. It was generally horse drawn until mechanisation in the 1930s. The first versions were introduced in 1904. Later versions remained in service with British forces until early 1942. During the interwar period, the 18-pounder was developed into the early versions of the equally famous Ordnance QF 25-pounder, which would form the basis of the British artillery forces during and after the Secon ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
17 Pounder
The Ordnance Quick-Firing 17-pounder (or just 17-pdr)Under the British standard ordnance weights and measurements the gun's approximate projectile weight is used to denote different guns of the same calibre. Hence this was a 3-inch gun, of which there were several types in British service, which fired a projectile weighing approximately was a 76.2 mm (3 inch) gun developed by the United Kingdom during World War II. It was used as an anti-tank gun on its own carriage, as well as equipping a number of British tanks. Used with the APDS shot, it was capable of defeating all but the thickest armour on German tanks. It was used to 'up-gun' some foreign-built vehicles in British service, notably to produce the Sherman Firefly variant of the US M4 Sherman tank, giving British tank units the ability to hold their own against their German counterparts. In the anti-tank role, it was replaced after the war by the 120 mm BAT recoilless rifle. As a tank gun, it was succeeded by the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
13 Pounder
The Ordnance QF 13-pounder ( quick-firing) field gun was the standard equipment of the British and Canadian Royal Horse Artillery at the outbreak of World War I. History The QF 13-pounder was developed as a response to combat experience gained in the Boer War and entered service in 1904, replacing the Ehrhard QF 15-pounder and BL 12-pounder 6 cwt. It was intended as a rapid-firing and highly-mobile, yet reasonably powerful, field gun for Royal Horse Artillery (RHA) batteries supporting Cavalry brigades, and were expected to be engaged in mobile open warfare. It was developed in parallel with the QF 18-pounder used by Royal Field Artillery. The original Mk I barrel was wire wound. Later Mk II barrels had a tapered inner A tube which was pressed into the outer tube. A hydro-spring recoil system was mounted above the barrel. The carriage was a pole trail type with two seats for the gunners and a protective shield. The first British artillery round on the Western Front in Wor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Caliber
In guns, particularly firearms, caliber (or calibre; sometimes abbreviated as "cal") is the specified nominal internal diameter of the gun barrel Gauge (firearms) , bore – regardless of how or where the bore is measured and whether the finished bore matches that specification. It is measured in inches or in millimetres, millimeters. In the United States it is expressed in hundredths of an inch; in the United Kingdom in thousandths; and elsewhere in millimeters. For example, a "45 caliber" firearm has a barrel diameter of roughly . Barrel diameters can also be expressed using metric dimensions. For example, a "9 mm pistol" has a barrel diameter of about 9 millimeters. Since metric and US customary units do not convert evenly at this scale, metric conversions of caliber measured in decimal inches are typically approximations of the precise specifications in non-metric units, and vice versa. In a rifling , rifled barrel, the distance is measured between opposing Rifling#C ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
