The RBC Rudder Deflection Device enables you to accurately measure and set your control surface throws. It works either in a vertical direction for rudders or in a horizontal direction for elevators, ailerons and flaps.
The control throws are easily measured, without the need of a third Hand, On the laser-inscribed gauge in standard measurements on one side or metric on the other side in Imperial. A bit of glueing with ca and epoxy has it finished in a few minutes