Seconds to Mils (NATO) conversion
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A second of arc is a unit of angular measurement equal to one sixtieth (1⁄60) of one minute of arc. Since one minute of arc is defined as 1⁄21600 of a rotation, one second of arc is 1⁄1296000 of a rotation.
Mils (NATO) conversion
Mil (NATO) is a unit of angle commonly used by military organizations. Its relationship to the radian gives rise to the handy property that an object of size S that subtends an angle A angular mils is at a distance D = 1000 * S/A. In NATO countries mil equals to 1/6400 of a circle.