To obtain a measuring apparatus by which a rake angle and a relief angle can be measured simply and surely, by a method wherein a signal is received from a sensor device which detects the angle position of a measuring spindle and which outputs an output signal indicating the rotation position of the measuring spindle, and an angle measured value which is obtained is displayed.

A measuring spindle 36 is installed inside a measuring apparatus 29, and it is connected to a sensor device 38 which measures the rotation and the angle position of the measuring spindle 36 precisely. In addition, a sensor means plays a role to detect the position of a carriage 28 and that of the measuring spindle 36 (a swivel axis) in order to measure a distance up to the swivel axis from the shaft 6 of a holding unit, and it sends a signal to an evaluation device in which a display device is installed. In order to measure a saw blade 21, the measuring spindle 36 is moved by the carriage 28. The rake angle is measured by rotating the saw blade 21 at a slight angle around the shaft 6. The relief angle is measured by moving the measuring spindle 36 in the radial direction.