SkyRC Angle Gauge SAM-020 (3Pcs) for RC AirplanesSkyRC Angle Gauge Angle matters: fine tune RC plane deflection in real time! Surface angle adjustment for a model aircraft is the top priority, including the maximum value of the rudder, mixing control surface value of relative angle, and differential angle value of the aileron. Mechanical measuring is the typical method to get the testing data but with low efficiency and significant deviation. In this way, the relative angle's value cannot be