The non-contact type application on the permanent magnetic and Hall Effect sensor gauging rotary system are introduced in this work. The main component of the angular position estimation system is Hall sensor. The sensor applied on the step motor can provide more precise resolution up to 600 steps per cycle. And the circular scale is used to detect the accuracy of the angle gauge. The advantages of the system will be offered on the reliable operation for the special environmental conditions, such as high vibration, temperature, humidity or dust. The contactless angle measurement provides accuracy, precision and stability with less wearing out.