Patent ID: 7523691

Claim:
A miter saw comprising: a base that supports a workpiece thereon; a turntable supported on the base and rotatable about a rotation axis relative to the base; a circular saw unit that rotatably supports a circular saw blade; a support section provided to the turntable and pivotally movably supporting the circular saw unit at a position above the turntable a rotation amount detection unit that generates pulses indicative of rotation amount of the turntable relative to the base, each pulse being generated at every rotation of the turntable by a predetermined unit rotation angle; a display that displays a rotation angle of the turntable; and a control unit comprising: means for judging whether or not a first set of numbers of pulses from the rotation amount detection unit is within a specific pulse number range; means for determining a specific rotation angle corresponding to the specific pulse number range if the first set of numbers of pulses from the rotation amount detection unit is within the specific pulse number range; means for computing a rotation angle of the turntable, without referring to a memory showing a relationship between each pulse number range and each rotation angle, by computing the rotation angle based on the rotation amount detected by the rotation amount detection unit at a rate of a predetermined display unit rotation angle which is an integral multiple of the predetermined unit rotation angle, if the first set of numbers of pulses from the rotation amount detection unit is outside of the specific pulse number range, the specific rotation angle being other than an integral multiple of the predetermined display unit rotation angle; and means for displaying one of the computed rotation angle and the determined specific rotation angle at the display.