Angular millet
The angular millet (or Thousandth angular) is a Measuring unit of Angle of use in the military field, used especially for the instruments of orientation and pointing. Its symbol is a " m" barred with 30 degrees.
The battalions of Artillerie of many countries use the millet like angular measuring unit, although there are three different definitions.
Among the Member States of NATO, including the Canada, the millet is defined as being 1/6400 of a revolution (360°). The unit draws its name from the Milli Radian, of which it approaches the value except for 18 ‰ (rigorously, 2π radians in thousandths would be equal to 2*π*1000 = 6283 thousandth). By convention, it was selected a round number, 6400 what has the advantage of being able to build is even a rapporteur of fortune by folding a sheet of paper (circular) six times consecutively (because 64 = 2 ⁶). A variation of a millet one away kilometer corresponds to approximately a meter. There are 1600 millets in 90°, 17,8 millets in a degree. The millet is also used in shooting with the rifle of precision, the reticles of the telescopes of these rifles being often graduated in millets.
The Soviet millet is worth 1/6000 of a revolution, value which with the advantage of converting itself more easily into degrees (a Soviet millet = 0,06°).
The millet Swedish is worth 1/6300 of a revolution, value which with the advantage of being a better approximation of the milliradian (error of 3 ‰).
This unit also makes it possible to have an approximation of the distances without having to make trigonometrical calculations of the angles by using the tangent function.
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