Like all precise measurement instruments, the Spicer® Anglemaster® must periodically be monitored for accuracy. The Spicer Anglemaster should be tested daily with the Accuracy Test. If the unit is found to be out of calibration, it is easily recalibrated on site using Superset® - an eight-step procedure that realigns the unit through its entire 360° range and takes just a couple of minutes to perform. Superset does not require any special fixtures, tools, or expertise.