Selected category: angle.
Selected initial unit : grad.
Definition and details for grad:
Grad (g, or gr, or grd), also called grade, gradian, or gon is a unit of angle measurement in the centesimal system, in which a right angle is divided into 100 centesimal degrees (grads). Thus one grad is equal to 1/400 of a turn. This unit is the English version of French grade and it was proposed by engineers around 1900.
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