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Conversion Of Units CONVERSION OF UNITS is the conversion between different units of measurement for the same quantity , typically through multiplicative CONVERSION FACTORS [...More...]  "Conversion Of Units" on: Wikipedia Yahoo 

Rod (length) The ROD or PERCH or POLE is a surveyors tool and unit of length equal to 5 1⁄2 yards , 16 1⁄2 feet , 1⁄320 of a statute mile or onefourth of a surveyor\'s chain and 5.0292 meters . The rod is useful as a unit of length because whole number multiples of it can form one acre of square measure. The 'perfect acre' is a rectangular area of 43,560 square feet, bounded by sides 660 feet by 66 feet long (660 ft long × 66 ft wide), or 220 yards by 22 yards long (220 yd/ long × 22 yd wide), or 40 rods by 4 rods long. Thus, an acre is 160 square rods. Since the adoption of the international yard on 1 July 1959, the rod has been equal to exactly 5.0292 meters . A rod is the same length as a perch, also sometimes called a POLE which measure using cordage or wood, slightly antedated the use of both rods and surveyors chains, made of more dimensionally regular materials [...More...]  "Rod (length)" on: Wikipedia Yahoo 

Cubit The CUBIT is an ancient unit based on the forearm length from the tip of the middle finger to the bottom of the elbow . Cubits of various lengths were employed in many parts of the world in antiquity , during the Middle Ages Middle Ages and as recently as Early Modern Times . The term is still used in hedge laying , the length of the forearm being frequently used to determine the interval between stakes placed within the hedge [...More...]  "Cubit" on: Wikipedia Yahoo 

Ell An ELL (from ProtoGermanic *alinō, cognate with Latin Latin ulna ) is a unit of measurement , originally a cubit , i.e., approximating the length of a man's arm from the elbow ("elbow" means the bend or bow of the ell or arm) to the tip of the middle finger, or about 18 inches (457 mm); in later usage, any of several longer units. In Englishspeaking countries, these included (until the 19th century) the Flemish ell ( 3⁄4 of a yard), English ell ( 1 1⁄4 yards) and French ell ( 1 1⁄2 yards), some of which are thought to derive from a "double ell" [...More...]  "Ell" on: Wikipedia Yahoo 

Edmund Gunter EDMUND GUNTER (1581 – 10 December 1626), was an English clergyman , mathematician , geometer and astronomer of Welsh descent. He is best remembered for his mathematical contributions which include the invention of the Gunter\'s chain , the Gunter\'s quadrant , and the Gunter\'s scale . In 1620, he invented the first successful analog device which he developed to calculate logarithmic tangents. He was mentored in mathematics by Reverend Henry Briggs and eventually became a Gresham Professor of Astronomy , from 1619 until his death. CONTENTS * 1 Biography * 2 Gunter\'s chain * 3 Gunter\'s quadrant * 4 Gunter\'s scale * 5 Gunter rig * 6 See also * 7 References * 8 External links BIOGRAPHYGunter was born in Hertfordshire in 1581. He was educated at Westminster School Westminster School , and in 1599 he matriculated at Christ Church, Oxford [...More...]  "Edmund Gunter" on: Wikipedia Yahoo 

Chain (unit) A CHAIN is a unit of length . It measures 66 feet , or 22 yards , or 100 links , or 4 rods (20.1168 m ). There are 10 chains in a furlong , and 80 chains in one statute mile . An acre is the area of 10 square chains (that is, an area of one chain by one furlong). The chain has been used for several centuries in Britain and in some other countries influenced by British practice. By extension, CHAINAGE (running distance) is the distance along a curved or straight survey line from a fixed commencing point, as given by an odometer . CONTENTS * 1 Origin * 2 Instrument * 2.1 Ramsden\'s chain * 2.2 Other instruments * 3 Contemporary use * 3.1 Cricket pitches * 3.2 Texas Texas chain * 3.3 Australian and New Zealand New Zealand use * 3.4 North America * 4 References * 5 External links ORIGIN This section DOES NOT CITE ANY SOURCES . Please help improve this section by adding citations to reliable sources [...More...]  "Chain (unit)" on: Wikipedia Yahoo 

Inch The INCH (abbreviation: IN or ″ ) is a unit of length in the (British) imperial and United States customary systems of measurement now formally equal to 1⁄36 yard but usually understood as 1⁄12 of a foot . Derived from the Roman uncia ("twelfth"), inch is also sometimes used to translate related units in other measurement systems, usually understood as deriving from the width of the human thumb . Traditional standards for the exact length of an inch have varied in the past, but since the adoption of the international yard during the 1950s and 1960s it has been based on the metric system and defined as exactly 2.54 cm [...More...]  "Inch" on: Wikipedia Yahoo 

MOS MOS may refer to: * mos, the singular form of mōrēs * Mos, Spain , a municipality in Galicia, Spain in the province of Pontevedra * Mos, a traditional dish of the Nivkh people * Mos language , an aboriginal Mon–Khmer language of Malaya and Thailand * Mos Def Mos Def , American hip hop artist and actor * Wash, in Hungarian .CONTENTS * 1 Government and military * 2 Places * 3 Technology * 3.1 Computing * 4 Other uses * 5 See also GOVERNMENT AND MILITARY * Master of the Sword , the title for the head of physical education at the U.S. Military Academy at West Point * Member of Service , term used to describe any emergency responder (police officer, firefighter, emergency medical technician) that needs emergency help, usually over twoway radio * Military occupation specialty code , used by the U.S [...More...]  "MOS" on: Wikipedia Yahoo 

Foot (unit) The FOOT (pl. FEET; abbreviation: FT; symbol: ′, the prime symbol ) is a unit of length in the imperial and US customary systems of measurement . Since 1959, both units have been defined by international agreement as equivalent to 0.3048 meters exactly. In both systems, the foot comprises 12 inches and three feet compose a yard . Historically the "foot" was a part of many local systems of units, including the Greek , Roman , Chinese , French , and English systems. It varied in length from country to country, from city to city, and sometimes from trade to trade. Its length was usually between 250 mm and 335 mm and was generally, but not always, subdivided into 12 inches or 16 digits . The United States is the only industrialized nation that uses the international foot and the survey foot (a customary unit of length ) in preference to the meter in its commercial, engineering, and standards activities [...More...]  "Foot (unit)" on: Wikipedia Yahoo 

Fathom A FATHOM is a unit of length in the imperial and the U.S. customary systems equal to 6 feet (1.8288 metres), used especially for measuring the depth of water. There are two yards (6 feet ) in an imperial fathom. Originally the span of a man's outstretched arms, the size of a fathom has varied slightly depending on whether it was defined as a thousandth of an (Admiralty) nautical mile or as a multiple of the imperial yard . Formerly, the term was used for any of several units of length varying around 5–5 1⁄2 feet (1.5–1.7 m) [...More...]  "Fathom" on: Wikipedia Yahoo 

Fermi (unit) The FEMTOMETRE (American spelling FEMTOMETER, symbol FM derived from the Danish and Norwegian word femten, "fifteen"+ Ancient Greek Ancient Greek : μέτρον, metrοn, "unit of measurement") is an SI unit of length equal to 10−15 metres , which means a quadrillionth of one. This distance can also be called a FERMI and was so named in honour of physicist Enrico Fermi Enrico Fermi , as it is a typical lengthscale of nuclear physics . DEFINITION AND EQUIVALENTS1000 attometres = 1 FEMTOMETRE = 1 FERMI = 0.001 picometre = 6985100000000000000♠1×10−15 metres 7006100000000000000♠1000000 femtometres = 10 ångström = 1 nanometre . For example, the charge radius of a proton is approximately 0.84–0.87 femtometres while the radius of a gold nucleus is approximately 8.45 femtometres. 1 barn = 100 fm2 HISTORYThe femtometre was adopted by the 11th Conférence Générale des Poids et Mesures , and added to SI in 1964 [...More...]  "Fermi (unit)" on: Wikipedia Yahoo 

Line (unit) The LINE (abbreviated L or L) was a small English unit of length , variously reckoned as 1⁄10, 1⁄12, 1⁄16, or 1⁄40 of an inch . It was not included among the units authorized as the British Imperial system in 1824. CONTENTS * 1 Size * 2 In use * 3 Foreign units * 4 See also * 5 References * 5.1 Citations * 5.2 Bibliography SIZEThe line was not recognized by any statute of the English Parliament but was usually understood as 1⁄4 of a barleycorn , which itself was recognized by statute as 1⁄3 of an inch but often reckoned as 1⁄4 of an inch instead. The line was eventually decimalized as 1⁄10 of an inch, without recourse to barleycorns. The button trade used the term, redefined as 1⁄40 of an inch . IN USEBotanists formerly used the units (usually as 1⁄12 inch) to measure the size of plant parts [...More...]  "Line (unit)" on: Wikipedia Yahoo 

Link (unit) The LINK (usually abbreviated as "l.", "li." or "lnk."), sometimes called a GUNTER’S LINK, is a unit of length formerly used in many Englishspeaking countries. A link is exactly 66⁄100 of a foot , or exactly 7.92 inches or 20.1168 cm. The unit is based on Gunter\'s chain , a metal chain 66 feet long with 100 links, that was formerly used in land surveying . Even after the original tool was replaced by later instruments of higher precision, the unit itself was commonly used in this application throughout the Englishspeaking world (e.g. in the United States customary system of measurements and the Imperial system ). The length of the foot, and hence the link, varied slightly from place to place and time to time, but in modern times the difference between, say, the US survey foot and the international foot is two parts per million. The link fell out of general use in the 20th century [...More...]  "Link (unit)" on: Wikipedia Yahoo 

League (unit) A LEAGUE is a unit of length (or, in various regions, area). It was common in Europe and Latin America, but is no longer an official unit in any nation. The word originally meant the distance a person could walk in an hour. Since the Middle Ages, many values have been specified in several countries. CONTENTS* 1 Different definitions * 1.1 Englishspeaking world * 1.2 Ancient Rome * 1.3 Argentina * 1.4 Brazil and Portugal * 1.5 France * 1.6 Mexico * 1.7 Spain * 1.8 United States * 2 Comparison table * 3 See also * 4 References DIFFERENT DEFINITIONSENGLISHSPEAKING WORLDOn land, the league is most commonly defined as three miles , though the length of a mile could vary from place to place and depending on the era. At sea, a league is three nautical miles (3.452 miles; 5.556 kilometres). English usage also included many of the other leagues mentioned below (for example, in discussing the Treaty of Tordesillas ) [...More...]  "League (unit)" on: Wikipedia Yahoo 

Hand (unit) The HAND is a nonSI unit of measurement of length standardized to 4 inches (101.6 mm). It is used to measure the height of horses in some Englishspeaking countries, including Australia , Canada , the Republic of Ireland , the United Kingdom and the United States . It was originally based on the breadth of a human hand. The adoption of the international inch in 1959 allowed for a standardized imperial form and a metric conversion. It may be abbreviated to "h" or "hh". Although measurements between whole hands are usually expressed in what appears to be decimal format, the subdivision of the hand is not decimal but is in base 4 , so subdivisions after the radix point are in quarters of a hand, which are inches. Thus, 62 inches is fifteen and a half hands, or 15.2 hh (normally said as "fifteentwo", or occasionally in full as "fifteen hands two inches") [...More...]  "Hand (unit)" on: Wikipedia Yahoo 