Convert Microinches to Kilometers (µin to km) ▶
How to convert
1 kilometer (km) = 39370100000 microinch (µin). Kilometer (km) is a unit of Length used in Metric system. Microinch (µin) is a unit of Length used in Standard system.
Kilometer - Unit of Distance / Length
Unit Symbol/Abbreviation: km
Where the unit used in the World:
The kilometer is used as a unit used to measure distances or lengths.
Definition of the Unit:
The kilometer (kilometre in UK spelling) is a unit of length/distance in the metric system (SI Unit system) equivalent to one thousand meters.
History of the Unit:
Although the meter was defined in 1799 in France, the kilometer was first adopted for everyday use by the Dutch in 1817 under local name of the mijl. The myriametre (10000 meters) and "lieues de Poste" (Postal leagues, 4288 meters) were preferred to the "kilometer" for everyday use in France in 19th century. In the mid 19th century the kilometer was already in everyday use in the Italy and in Netherlands and the myriametre was still in use in France. The CIPM (The International Committee for Weights and Measures) officially abolished the prefix "myria-" and the "myriametre" in 1935, leaving the kilometer as the recognised unit of length instead of myriametre.
Where it's used:
The kilometer is commonly used on road signs to indicate the distance to travel to a given location, on maps to indicate scale, for odometer indication in automotive industry. It is also the most popular unit for describing the distance between geographical points and locations.
Equivalents in other units and scales:
1 km is equivalent to 0.621371 mi.
Microinch: A Unit of Length
The microinch is a unit of length that is equal to one millionth of an inch (0.000001 inch). It is a non-SI unit of measurement that is mainly used in engineering and manufacturing fields. The symbol for microinch is µin or µ". The microinch is also a derived unit in the British imperial and US customary systems of measurement.
The microinch is most commonly used when expressing small distances or dimensions, such as the surface roughness or flatness of materials and parts. The microinch is also used for measuring the wavelength of light and other electromagnetic waves.
In this article, we will explore the definition, history, usage and conversion of the microinch as a unit of length.
Definition of the Microinch
The microinch is a unit of length that is equal to one millionth of an inch (0.000001 inch). It is defined as 25.4 nanometers or 2.54 × 10^-8 meters by international agreement in 1959. One inch is equal to 25.4 millimeters or 0.0254 meter.
The definition of the microinch has changed over time, as different standards and methods of measurement were developed by various countries and organizations. The current definition of the microinch as based on the meter was agreed upon by an international treaty in 1959.
History of the Microinch
The origin of the microinch as a unit of length can be traced back to the early 20th century, when it was introduced by the American Society for Testing and Materials (ASTM) as a standard for measuring surface roughness. Surface roughness is a measure of how smooth or irregular a surface is, which affects its friction, wear and corrosion properties.
The microinch was adopted by other countries and industries that followed the American system of measurement, such as Canada and Japan. It was also incorporated into the ANSI/ASME B46.1 standard for surface texture in 1985.
The microinch was also used by some optical scientists and engineers to measure the wavelength of light and other electromagnetic waves. For example, the visible spectrum of light ranges from about 4,000 to 7,000 microinches.
Usage of the Microinch
The microinch is a unit of length that is used for measuring small distances or dimensions, such as the surface roughness or flatness of materials and parts. For example:
The microinch is commonly used in engineering and manufacturing fields, especially in precision machining, metrology and quality control. Some examples are:
The microinch is also used for measuring the wavelength of light and other electromagnetic waves. For example:
Example Conversions of Microinch to Other Units
The microinch can be converted to other units of length by using different factors and formulas. Here are some examples of conversion for different types of units:
1 µin / 1,000,000 = 0.000001 in
1 µin / 12,000,000 = 8.333 × 10^-8 ft
1 µin / 36,000,000 = 2.778 × 10^-8 yd
1 µin x 2.54 × 10^-8 = 2.54 × 10^-8 m
1 µin x 2.54 × 10^-14 = 2.54 × 10^-14 km
1 µin x 25.4 = 25.4 nm
1 in x 1,000,000 = 1,000,000 µin
1 ft x 12,000,000 = 12,000,000 µin
1 yd x 36,000,000 = 36,000,000 µin
1 m / 2.54 × 10^-8 = 39,370,078.74 µin
1 km / 2.54 × 10^-14 = 39,370,078,740,157.48 µin
1 nm / 25.4 = 0.03937 µin
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