ch - Ramsden's (engineers') Chain. Conversion Chart

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Your value (Ramsden's (engineers') chain, ch):
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The American System (US Customary Units) and British Imperial Measures

American weights and measures are based on units used in Britain prior to 1826, when imperial system was officially established. Until 1960-1963 American and British units of length were different in 2 parts per million. In the middle of 20th century it started causing problems and the governments of the two countries agreed to refine the measures to exactly match. Since then Great Britain and the United States were using the same measures of length. In the U.S. the old standard of foot was retained with the name US survey foot.

From 1995 the UK adopted metric units for general use. The only imperial measures of length that can be officially used now are miles, yards, feet and inches for road traffic signs.

Ramsden's (engineers') chain to league
Ramsden's (engineers') chain to mile (mi)
Ramsden's (engineers') chain to land
Ramsden's (engineers') chain to furlong
Ramsden's (engineers') chain to bolt
Ramsden's (engineers') chain to chain
Ramsden's (engineers') chain to pole
Ramsden's (engineers') chain to rod (rd)
Ramsden's (engineers') chain to perch
Ramsden's (engineers') chain to yard (yd)
Ramsden's (engineers') chain to feet and inches (x'y")
Ramsden's (engineers') chain to span
Ramsden's (engineers') chain to hand
Ramsden's (engineers') chain to inch (in)
Ramsden's (engineers') chain to line
Ramsden's (engineers') chain to mil
Ramsden's (engineers') chain to microinch
Units: league  / mile (mi)  / land  / furlong  / bolt  / chain  / pole  / rod (rd)  / perch  / yard (yd)  / foot (ft)  / feet and inches (x'y")  / span  / hand  / inch (in)  / line  / mil  / microinch
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British Imperial Measure before 1963

The first English official measurement standards were defined in 15th century. British system of units, known as imperial units, was established in 1824. The British Weights and Meausurements Act of 1824 repealed all existing British measures legislation and redefined existing units. The 1963 Weights and Measures Act standartized the international measures.
Ramsden's (engineers') chain to league
Ramsden's (engineers') chain to mile (mi)
Ramsden's (engineers') chain to land
Ramsden's (engineers') chain to skein
Ramsden's (engineers') chain to bolt
Ramsden's (engineers') chain to shackle
Ramsden's (engineers') chain to furlong
Ramsden's (engineers') chain to chain
Ramsden's (engineers') chain to rope
Ramsden's (engineers') chain to pole
Ramsden's (engineers') chain to goad
Ramsden's (engineers') chain to ell
Ramsden's (engineers') chain to yard (yd)
Ramsden's (engineers') chain to pace
Ramsden's (engineers') chain to cubit (cu)
Ramsden's (engineers') chain to foot (ft)
Ramsden's (engineers') chain to span (sp)
Ramsden's (engineers') chain to nail
Ramsden's (engineers') chain to shaftment
Ramsden's (engineers') chain to hand (hd)
Ramsden's (engineers') chain to palm (plm)
Ramsden's (engineers') chain to inch (in)
Ramsden's (engineers') chain to finger
Ramsden's (engineers') chain to digit
Ramsden's (engineers') chain to barleycorn
Ramsden's (engineers') chain to poppyseed
Ramsden's (engineers') chain to line
Ramsden's (engineers') chain to button
Ramsden's (engineers') chain to caliber
Ramsden's (engineers') chain to thou (th)
Ramsden's (engineers') chain to mil
Units: league  / mile (mi)  / land  / skein  / bolt  / shackle  / furlong  / chain  / rope  / pole  / goad  / ell  / yard (yd)  / pace  / cubit (cu)  / foot (ft)  / span (sp)  / nail  / shaftment  / hand (hd)  / palm (plm)  / inch (in)  / finger  / digit  / barleycorn  / poppyseed  / line  / button  / caliber  / thou (th)  / mil
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US Surveyors' Measure

Ramsden's (engineers') chain to furlong
Ramsden's (engineers') chain to Gunter's (surveyors') chain (ch)
Ramsden's (engineers') chain to Gurley's chain (ch)
Ramsden's (engineers') chain to Gunter's (surveyors') pole
Ramsden's (engineers') chain to Gunter's (surveyors') yard
Ramsden's (engineers') chain to Gunter's (surveyors') foot (ft)
Units: furlong  /  / Gunter's (surveyors') chain (ch)  / Gurley's chain (ch)  / Gunter's (surveyors') pole  / Gunter's (surveyors') yard  / Ramsden's (engineers') link  / Gunter's (surveyors') link  / Gurley's link  / Gunter's (surveyors') foot (ft)
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International Nautical Measure

The international nautical mile was defined by the First International Extraordinary Hydrographic Conference, Monaco in 1929. This is the only definition in widespread current use, and is the one accepted by the International Bureau of Weights and Measures. Before 1929 different countries had different definitions, and the Soviet Union, the United Kingdom and the United States did not immediately accept the international value.
Ramsden's (engineers') chain to nautical league (naut.leag)
Ramsden's (engineers') chain to nautical mile (naut.mi)
Ramsden's (engineers') chain to cable length (cbl)
Ramsden's (engineers') chain to fathom (fath)
Units: nautical league (naut.leag)  / nautical mile (naut.mi)  / cable length (cbl)  / fathom (fath)
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US Nautical Measure

These measures were abandoned in favor of the international nautical measures in 1954.
Ramsden's (engineers') chain to US nautical mile
Ramsden's (engineers') chain to US fathom (fath)
Units: US nautical mile  / US cable length  / US fathom (fath)
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British (Imperial) Nautical Measure

These measures were abandoned in favor of the international nautical measures in 1970.
Ramsden's (engineers') chain to Admiralty mile
Ramsden's (engineers') chain to Admiralty cable length
Units: Admiralty mile  / Admiralty cable length
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Spanish Customary Units Still In Use Today

These units are still actively used in some countries of Latin America. Their values vary from country to country. You can find more old Spanish customary units on our historical lengths page.
Ramsden's (engineers') chain to cuadra of Argentina
Ramsden's (engineers') chain to cuadra of Bolivia
Ramsden's (engineers') chain to cuadra of Chile
Ramsden's (engineers') chain to cuadra of Colombia
Ramsden's (engineers') chain to cuadra of Ecuador
Ramsden's (engineers') chain to cuadra of Nicaragua
Ramsden's (engineers') chain to cuadra of Paraguay
Ramsden's (engineers') chain to cuadra of Uruguay
Ramsden's (engineers') chain to vara of Argentina
Ramsden's (engineers') chain to vara of Brazil
Ramsden's (engineers') chain to vara of Chile
Ramsden's (engineers') chain to vara of Colombia
Ramsden's (engineers') chain to vara of Costa Rica
Ramsden's (engineers') chain to vara of Cuba
Ramsden's (engineers') chain to vara of Dominican Republic
Ramsden's (engineers') chain to vara of Ecuador
Ramsden's (engineers') chain to vara of El Salvador
Ramsden's (engineers') chain to vara of Guatemala
Ramsden's (engineers') chain to vara of Honduras
Ramsden's (engineers') chain to vara of Mexico
Ramsden's (engineers') chain to vara of Nicaragua
Ramsden's (engineers') chain to vara of Panama
Ramsden's (engineers') chain to vara of Paraguay
Ramsden's (engineers') chain to vara of Peru (peruana)
Ramsden's (engineers') chain to vara of Peru (española)
Ramsden's (engineers') chain to vara of Uruguay
Ramsden's (engineers') chain to vara of São Tomé and Principe
Ramsden's (engineers') chain to vara of Venezuela
Units: cuadra of Argentina  / cuadra of Bolivia  / cuadra of Chile  / cuadra of Colombia  / cuadra of Ecuador  / cuadra of Nicaragua  / cuadra of Paraguay  / cuadra of Uruguay  / vara of Argentina  / vara of Brazil  / vara of Chile  / vara of Colombia  / vara of Costa Rica  / vara of Cuba  / vara of Dominican Republic  / vara of Ecuador  / vara of El Salvador  / vara of Guatemala  / vara of Honduras  / vara of Mexico  / vara of Nicaragua  / vara of Panama  / vara of Paraguay  / vara of Peru (peruana)  / vara of Peru (española)  / vara of Uruguay  / vara of São Tomé and Principe  / vara of Venezuela
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Hong Kong units

Ramsden's (engineers') chain to cek (尺)
Ramsden's (engineers') chain to tsun (寸)
Ramsden's (engineers') chain to fan (分)
Units: cek (尺)  / tsun (寸)  / fan (分)
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Thai units

Some of these units are still in use even though metric system was formally established in 1923. Before the metrication the old units were standartied to exact metric values.
Ramsden's (engineers') chain to yot (โยชน์, league)
Ramsden's (engineers') chain to sen (เส้น, rope)
Ramsden's (engineers') chain to wa (วา, fathom)
Ramsden's (engineers') chain to sok (ศอก, cubit)
Ramsden's (engineers') chain to khuep (คืบ, span)
Ramsden's (engineers') chain to nio (นิ้ว, finger)
Ramsden's (engineers') chain to krabiat (กระเบียด, quarter of a finger)
Units: yot (โยชน์, league)  / sen (เส้น, rope)  / wa (วา, fathom)  / sok (ศอก, cubit)  / khuep (คืบ, span)  / nio (นิ้ว, finger)  / krabiat (กระเบียด, quarter of a finger)
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Optical

Ramsden's (engineers') chain to dioptre (diopter)
Units: dioptre (diopter)
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Geographical (German)

Ramsden's (engineers') chain to geographical mile
Units: geographical mile
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Computer Equipment

A rack unit, U or RU is a unit of measure that describes the height of equipment designed to mount in a 19-inch rack or a 23-inch rack. The 19-inch (482.6 mm) or 23-inch (584.2 mm) dimension refers to the width of the equipment mounting frame in the rack including the frame; the width of the equipment that can be mounted inside the rack is less.
Ramsden's (engineers') chain to rack unit (U)
Ramsden's (engineers') chain to horizontal pitch (HP)
Units: rack unit (U)  / horizontal pitch (HP)
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Typographical (British and U.S. - ATA system)

Ramsden's (engineers') chain to pica
Ramsden's (engineers') chain to pica [PostScript]
Ramsden's (engineers') chain to point (pt)
Ramsden's (engineers') chain to point [PostScript] (pt)
Ramsden's (engineers') chain to pixel (px)
Ramsden's (engineers') chain to twip
Units: pica  / pica [PostScript]  / point (pt)  / point [PostScript] (pt)  / pixel (px)  / twip
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Typographical (Europe - Didot system)

Ramsden's (engineers') chain to cicero
Ramsden's (engineers') chain to point (pt)
Units: cicero  / point (pt)
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European footwear unit

Ramsden's (engineers') chain to Paris point
Units: Paris point
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Astronomical

Ramsden's (engineers') chain to red shift (z)
Ramsden's (engineers') chain to parsec (pc)
Ramsden's (engineers') chain to light year
Ramsden's (engineers') chain to astronomical unit (au)
Ramsden's (engineers') chain to light minute
Ramsden's (engineers') chain to light second
Units: red shift (z)  / parsec (pc)  / light year  / astronomical unit (au)  / light minute  / light second
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Grace Hopper's units of distance

Grace Hopper is famous for her nanoseconds visual aid. People used to ask her why satellite communication took so long. She started handing out pieces of wire that were just under one foot long (11.80 inches) — the distance that light travels in one nanosecond. She also passed out packets of pepper, calling the individual grains of ground pepper picoseconds. She also used these aids to illustrate why computers had to be small to be fast.
Ramsden's (engineers') chain to light microsecond
Ramsden's (engineers') chain to light nanosecond
Ramsden's (engineers') chain to light picosecond
Units: light microsecond  / light nanosecond  / light picosecond
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Natural units

In physics, natural units are physical units of measurement based only on universal physical constants. The origin of their definition comes only from properties of nature and not from any human construct.
Ramsden's (engineers') chain to Planck length (L)
Units: Planck length (L)

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