"Wa (unit) Wa ( , also ""waa"" or ""wah"", abbreviated ) is a unit of length, equal to two metres (2 m) or four (.) ""Wa"" as a verb means to outstretch (one's) arms to both sides, which relates to the fathom's distance between the fingertips of a man's outstretched arms. The 1833 Siamese-American Treaty of Amity and Commerce, reads, ""[The] Siamese fathom...being computed to contain 78 English or American inches, corresponding to 96 es."" The length then would have been equivalent to a modern 1.981 metres. Since conversion to the metric system in 1923, the length as derived from"
"Mile The mile is an English unit of length of linear measure equal to 5,280 feet, or 1,760 yards, and standardised as exactly 1,609.344 metres by international agreement in 1959. With qualifiers, ""mile"" is also used to describe or translate a wide range of units derived from or roughly equivalent to the Roman mile, such as the nautical mile (now 1.852 km exactly), the Italian mile (roughly 1.852 km), and the Chinese mile (now 500 m exactly). The Romans divided their mile into 5,000 roman feet but the greater importance of furlongs in pre-modern England meant that the statute mile"
"Chain (unit) The chain is a unit of length equal to 66 feet (22 yards). It is subdivided into 100 links or 4 rods. There are 10 chains in a furlong, and 80 chains in one statute mile. In metric terms, it is 20.1168 m long. 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. The chain has been used for several centuries in England and in some other countries influenced by English practice. In the United Kingdom, there were 80 chains to the"
"are also included in this list because, in terms of length, they fall in between the short West European miles and the long North, Central and Eastern European miles. Similar units: Even in English-speaking countries that have moved from the Imperial to the metric system (for example, Australia, Canada, and New Zealand), the mile is still used in a variety of idioms. These include: Mile The mile is an English unit of length of linear measure equal to 5,280 feet, or 1,760 yards, and standardised as exactly 1,609.344 metres by international agreement in 1959. With qualifiers, ""mile"" is also used"
"Furlong A furlong is a measure of distance in imperial units and U.S. customary units equal to one eighth of a mile, equivalent to 660 feet, 220 yards, 40 rods, or 10 chains. Using the international definition of the inch as exactly 25.4 millimetres, one furlong is 201.168 metres. However, the United States does not uniformly use this conversion ratio. Older ratios are in use for surveying purposes in some states, leading to variations in the length of the furlong of two parts per million, or about 0.4 millimetres ( inch). This variation is too small to have practical consequences"
"most practical measurements. Furlong A furlong is a measure of distance in imperial units and U.S. customary units equal to one eighth of a mile, equivalent to 660 feet, 220 yards, 40 rods, or 10 chains. Using the international definition of the inch as exactly 25.4 millimetres, one furlong is 201.168 metres. However, the United States does not uniformly use this conversion ratio. Older ratios are in use for surveying purposes in some states, leading to variations in the length of the furlong of two parts per million, or about 0.4 millimetres ( inch). This variation is too small to"
"To compare different orders of magnitude this section lists lengths between 100 metres and 1000 metres (1 kilometre). 100 metres (sometimes termed a hectometre) is equal to: To help compare different orders of magnitude this section lists lengths between 1 kilometre and 10 kilometres (10 and 10 metres). 1 kilometre (unit symbol km) is equal to: To help compare different orders of magnitude this section lists lengths between 10 and 100 kilometres (10 to 10 metres). The ""myriametre"" (sometimes also spelled ""myriameter"", ""myriometre"" and ""myriometer"") (10,000 metres) is a deprecated unit name; the decimal metric prefix myria- (sometimes also written"
"this section lists lengths starting at 10 m (1 Mm or 1,000 km). 1 megametre is equal to: To help compare different orders of magnitude, this section lists lengths starting at 10 metres (10 megametres or 10,000 kilometres). 10 megametres (10 Mm) is To help compare different orders of magnitude, this section lists lengths starting at 10 metres (100 megametres or 100,000 kilometres or 62,150 miles). To help compare different distances this section lists lengths starting at 10 metres (1 gigametre (Gm) or 1 billion metres). To help compare different distances this section lists lengths starting at 10 metres (10"
"Kos (unit) The kos (Sanskrit: कोस), also spelled Kosh, Krosh, krosha and Koss, is an ancient Indian subcontinental ""Arthashastra standard unit"" of distance, since at least 4 BCE. A kos is about 3.00 km or 1.91 miles. The """"Arthashastra: Chapter XX. Measurement of space and time"""", authored in 4th century BCE by Chanakya (Vishnugupta Kauṭilya), sets this standard breakup of Indian units of length: Kos may also refer to roughly 1.8 km (1 mile) or 3.2 km (2 miles). ""Arthashastra Standard unit"" of Kos or krosh is equal to 3075 metres in SI units and 1.91 miles in Imperial units."
"units used for measurement of length are metres (m) and millimetres (mm). Centimetres (cm) are avoided as they cause confusion when reading plans. For example, the length two and a half metres is usually recorded as 2500 mm or 2.5 m; it would be considered non-standard to record this length as 250 cm. American surveyors use a decimal-based system of measurement devised by Edmund Gunter in 1620. The base unit is Gunter's chain of which is subdivided into 4 rods, each of 16.5 ft or 100 links of 0.66 feet. A link is abbreviated ""lk,"" and links ""lks"" in old"
"m (1 cm and 1 dm). To help compare different orders of magnitude this section lists lengths between 10 centimetres and 100 centimetres (10 metre and 1 metre). 10 centimetres (abbreviated to 10 cm) is equal to: To help compare different orders of magnitude this section lists lengths between one metre and ten metres. Light travels 1 metre in , or 3.3356409519815204e-09 of a second. 1 metre is: To help compare different orders of magnitude this section lists lengths between 10 metres and 100 metres. 10 metres (very rarely termed a decametre which is abbreviated as dam) is equal to:"
"Yard The yard (abbreviation: yd) is an English unit of length, in both the British imperial and US customary systems of measurement, that comprises 3 feet or 36 inches. Since 1959 it is by international agreement standardized as exactly 0.9144 meters. The name derives from the Old English ', ', &c., which was used for branches, staves, and measuring rods. It is first attested in the late-7th century laws of Ine of Wessex, where the ""yard of land"" mentioned is the yardland, an old English unit of tax assessment equal to hide. Around the same time, the Lindisfarne Gospels account"
"Metre The metre (British spelling and BIPM spelling) or meter (American spelling) (from the French unit ""mètre"", from the Greek noun μέτρον, ""measure"") is the base unit of length in some metric systems, including the International System of Units (SI). The SI unit symbol is m. The metre is defined as the length of the path travelled by light in a vacuum in second. The metre was originally defined in 1793 as one ten-millionth of the distance from the equator to the North Pole – as a result the Earth's circumference is approximately 40,000 km today. In 1799, it was"
"or 1.81 km). It was legally abolished three times: first by a 1685 act of the Scottish Parliament, again by the 1707 Treaty of Union with England, and finally by the Weights and Measures Act 1824. It had continued in use as a customary unit through the 18th century but had become obsolete by its final abolition. The Irish mile (' or ') measured 2240 yards: approximately 1.27 statute miles or 2.048 kilometres. It was used in Ireland from the 16th century plantations until the 19th century, with residual use into the 20th century. The units were based on ""English"
"gigametres (Gm) or 10 million kilometres, or 0.07 Astronomical units). To help compare distances at different orders of magnitude this section lists lengths starting at 10 metres (100 Gm or 100 million kilometres or 0.7 astronomical units). To help compare different distances, this section lists lengths starting at 10 m (1 Tm or 1 billion km or 6.7 astronomical units). To help compare different distances this section lists lengths starting at 10 m (10 Tm or 10 billion km or 67 astronomical units). To help compare different distances this section lists lengths starting at 10 m (100 Tm or 100"
"metres, making the yard 0.9144018 metres and 1896 the British authorities fixed the yard as being 0.9143993 metres. At the time the discrepancy of about two parts per million was considered to be insignificant. In 1960, the United Kingdom, United States, Australia, Canada and South Africa standardised their units of length by defining the ""international yard"" as being 0.9144 metres exactly. This change affected land surveyors in the United States and led to the old units being renamed ""survey feet"", ""survey miles"" etc. However the introduction of the metric-based Ordnance Survey National Grid Surveyors in the United Kingdom in 1938"
"(~296 mm) was divided into both 12 ""unciae"" (inches) (~24.7 mm) and 16 digits (~18.5 mm). The Romans also introduced the ""mille passus"" (1000 paces) or double steps, the pace being equal to five Roman feet (~1480 mm). The Roman mile of 5000 feet (1480 m) was introduced into England during the occupation. Queen Elizabeth I (reigned from 1558 to 1603) changed, by statute, the mile to 5280 feet (~1609 m) or 8 furlongs, a furlong being 40 rod (unit)s (~201 m) of 5.5 yards (~5.03 m) each. The introduction of the yard (0.9144 m) as a unit of length"
"was made equivalent to 8 furlongs or 5,280 feet in 1593. This form of the mile then spread to the British-colonized nations some of which continue to employ the mile. The US Geological Survey now employs the metre for official purposes but legacy data from its 1927 geodetic datum has meant that a separate US survey mile ( km) continues to see some use. While most countries replaced the mile with the kilometre when switching to the International System of Units, the international mile continues to be used in some countries, such as Liberia, Myanmar, the United Kingdom, the United"
"Li (unit) The li (, ""lǐ"", or , ""shìlǐ""), also known as the Chinese mile, is a traditional Chinese unit of distance. The li has varied considerably over time but was usually about a third as long as the English mile and now has a standardized length of a half-kilometer (). This is then divided into 1,500 chi or ""Chinese feet"". The character 里 combines the characters for ""field"" (田, ""tián"") and ""earth"" (土, ""tǔ""), since it was considered to be about the length of a single village. As late as the 1940s, a ""li"" did not represent a fixed"
"longitude at the equator is thus exactly 60 geographical miles. It was closely related to the nautical mile, which was originally determined as 1 minute of arc along a great circle of the Earth, but is nowadays defined as exactly 1852 metres. The US National Institute of Standards and Technology (NIST) notes that: ""The international nautical mile of 1 852 meters (6 076.115 49...feet) was adopted effective July 1, 1954, for use in the United States. The value formerly used in the United States was 6 080.20 feet = 1 nautical (geographical or sea) mile."" (6080.2 feet is 1853.24496 meters.)"
"Unit of length A unit of length refers to any discrete, pre-established length or distance having a constant magnitude which is used as a reference or convention to express linear dimension. The most common units in modern use are U.S. customary units in the United States and metric units elsewhere. British Imperial units are still used for some purposes in the United Kingdom and some other countries. The metric system is sub-divided into SI and non-SI units. The base unit in the International System of Units (SI) is the metre, defined as ""the length of the path travelled by light"
"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 English-speaking countries. A link is exactly 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 English-speaking world (e.g. in the United States customary system of measurements and"
"Ligne The ligne ( ) or line or Paris line, is a historic unit of length used in France and elsewhere prior to the adoption of the metric system in the late 18th century, and used in various sciences after that time. The ""loi du 19 frimaire an VIII"" (Law of 10 December 1799) states that one metre is equal to exactly 443.296 French lines. It is vestigially retained today by French and Swiss watchmakers to measure the size of watch movements, in button making, and ribbon manufacture. There are 12 ""lignes"" to one French inch (""pouce""). The standardized conversion"
"to 3.546 m and one fermila was equal to 56.7383 km, as they were defined by their metric equivalents. Some other units are given below: 1 ferþumlungur = 1/5184 ferfaðmur 1 ferfet = 1/36 ferfaðmur 1 feralin = 1/9 ferfaðmur 1 túndagslátta = 900 ferfaðmar 1 engjateigur = 1600 ferfaðmar A number of units were used to measure capacity. One pottur (plural. pottar) was equal to 1/32 fet, and was equal to 0.9661 l as it was defined by its metric equivalent. Some other units are given below: 1 kornskeppa = 18 pottar 1 anker = 39 pottar 1 almenn"
"Geographical mile The geographical mile is a unit of length determined by 1 minute of arc along the Earth's equator. For the 1924 International Spheroid this equalled 1855.4 metres. ""The American Practical Navigator"" 2017 defines the geographical mile as . Greater precision depends more on choice of ellipsoid than on more careful measurement: the length of the equator in the World Geodetic System WGS-84 is which makes the geographical mile 1855.3248 m, while the ""IERS Conventions (2010)"" takes the equator to be making the geographical mile 1855.3250 m, 1.2 millimetres longer. In any ellipsoid, the length of a degree of"
"the nautical mile. The are (symbol a) is a unit of area equal to 100 square metres. The litre (symbol L or l) is a unit of volume equal to 10 m. ISO 80000-3:2006 assigns names and symbols to quantities and units of space and time, and defines these quantities and units. For example, Other units of time defined by the standard include the minute (1 min = 60 s), the hour (1 h = 60 min) and the day (1 d = 24 h). The year (1 a = 365 d or 366 d) is defined in an informative"
"the mesures usuelles system, such that 1m was exactly toise. The Russian verst was 1.0668km. The Swedish mil was 10.688km, but was changed to 10km when Sweden converted to metric units. Metre The metre (British spelling and BIPM spelling) or meter (American spelling) (from the French unit ""mètre"", from the Greek noun μέτρον, ""measure"") is the base unit of length in some metric systems, including the International System of Units (SI). The SI unit symbol is m. The metre is defined as the length of the path travelled by light in a vacuum in second. The metre was originally defined"
"the common length for English Measures four Poles, as answering indifferently to the Englishs Mile and Acre, 10 such Chains in length making a Furlong, and 10 single square Chains an Acre, so that a square Mile contains 640 square Acres."" —John Ogilby, Britannia, 1675 The official use of the furlong was abolished in the United Kingdom under the Weights and Measures Act 1985, an act that also abolished the official use of many other traditional units of measurement. In Myanmar, furlongs are currently used in conjunction with miles to indicate distances on highway signs. Mileposts on the Yangon–Mandalay Expressway"
"Rood (unit) A rood () is a historic English and international inch-pound measure of area, as well as an archaic English measure of length. ""Rood"" is an archaic word for ""pole"", from Old English ""rōd"" ""pole"", specifically ""cross"", from Proto-Germanic ""*rodo"", cognate to Old Saxon ""rōda"", Old High German ""ruoda"" ""rod""; the relation of ""rood"" to ""rod"", from Old English ""rodd"" ""pole"", is unclear; the latter was perhaps influenced by Old Norse ""rudda"" ""club"". Rood is an English unit of area, equal to one quarter of an acre or . A rectangle that is one furlong (i.e. 10 chains, or"
"(league) had a number of variations, particularly the ""aune"" (which was used to measure cloth The ""loi du 19 frimaire an VIII"" (Law of 10 December 1799) states that one decimal metre is exactly 443.296 French lines, or ""3 pieds 11.296 lignes de la ""Toise du Pérou"""". Thus the French royal foot is exactly 9000/27,706 metres (about 0.3248 m). In Quebec, the surveys in French units were converted using the relationship 1 ""pied"" (of the French variety, the same word being used for English feet as well) = 12.789 English inches. This makes the Quebec ""pied"" very slightly smaller (about"
"Algerian units of measurement A number of different, unique Algerian units of measurement were once used in that country, including for length, mass, and capacity, before 1843. After that, Algeria adopted the French system of units (i.e., the metric system). Before the 1843 changeover, different units were used to measure length. One pic (dzera à torky) was equal either to 0.64 m or 0.623 m), while a different pic (dzera à rabry) was equal to 0.48 m or 0.467 m). Some other units are given below: 1 termin = 1/8 pic 1 rebia = 1/4 pic 1 nus = 1/2"
"and is in widespread use throughout the world. (A hectare is about 2.5 acres.) The SI unit of volume is the cubic metre (m) the volume equivalent to the space occupied by a cube with sides of one metre. However, the litre, one of the oldest metric units, having been formally defined in 1795 as the volume occupied by a cube with sides of one tenth of a metre (making it equal to 0.001 m, or 1 dm) is in widespread use. The litre is not technically part of SI, but its use is sufficiently widespread that it is ""accepted"
"standardized, although to different values in different jurisdictions. (See chi (unit) for details.) In Hong Kong, using the traditional standard, it measures ~3.715 cm (~1.463 in) and is written ""tsun"". In the twentieth century in the Republic of China, the lengths were standardized to fit with the metric system, and in current usage in People's Republic of China and Taiwan it measures cm (~1.312 in). In Japan, the corresponding unit, , was standardized at mm (~3.030 cm, ~1.193 in, or ~0.09942 ft). Cun (unit) The cun (; ; ), often glossed as the ""Chinese inch"", is a traditional Chinese unit"