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In areas of machining where the thou is used, 0.0001 inches (2.54 micrometres) is often treated as a basic unit and can be referred to as "one tenth", meaning "one tenth of a thou" or "one ten thousandth". [8] Other common terms used in machining with Imperial units involve adding tenths together to achieve a specific tolerance or measurement.
The millimetre (SI symbol: mm) is a unit of length in the metric system equal to 10 −3 metres ( 1 / 1 000 m = 0.001 m). To help compare different orders of magnitude , this section lists lengths between 10 −3 m and 10 −2 m (1 mm and 1 cm).
Different lengths as in respect to the electromagnetic spectrum, measured by the metre and its derived scales.The microwave is between 1 meter to 1 millimeter.. The millimetre (international spelling; SI unit symbol mm) or millimeter (American spelling) is a unit of length in the International System of Units (SI), equal to one thousandth of a metre, which is the SI base unit of length.
1 thou is about 0.025 mm. 10 thou is about 0.25 mm. 1 tenth is about 2.5 μm. 1 μm can be thought of as half a tenth (although a bit smaller, 40 millionths versus 50 millionths). 1 mm is about 40 thou. I reinstated it but it was deleted again because "Not a textbook". Yet just above the deleted lines was the following: 1 thou is equal to:
thou or mil (1 ⁄ 1000 of an inch) ... the length two and a half meters is usually recorded as 2500 mm or 2.5 m; it would be considered non-standard to record this ...
[1] [2] The basis of the system is the thou (or mil in US English), or 0.001 in. Sizes are specified as wire diameters, stated in thou and tenths of a thou (mils and tenths). The wire diameter diminishes with increasing size number. No. 7/0, the largest size, is 0.50 in. (500 thou or 12.7 mm) dia.,
The basic module (M) is a unit of distance equal to one hundred millimetres (100 mm). The myriametre (mym) is a unit of distance equal to ten kilometres (10 km). The hebdometre is a unit of distance equal to ten megametres (10 Mm). The spat (S) is a unit of distance equal to one terametre (1 Tm).
Cross-sectional area of electrical wire is measured in circular mils in the U.S. and Canada, one circular mil (cmil) being equal to 5.067 × 10 −4 mm 2 (or 7.854 × 10 −7 in 2). Since this is so small, actual wire is commonly measured in thousands of a cmil, called either kcmil or MCM. The mil or thou is also sometimes used to mean ...