One of the most useful tools you will ever have, this device can be used to check any kind or type of servo for proper operation. Check for stripped gears, loose wires, bad potentiometers, and jittering often caused by faulty circuits inside a servo. Provides manual control of the servo, automatic cycling with variable cycle speeds, and also features a centering switch to move the servo to the exact electronic center and hold it there. A must for every bench and flight box, this gadget will save you loads of time at the field troubleshooting a servo problem, and the centering feature makes it great for centering your model’s control surfaces while building or adjusting linkages.
Also works great for testing brushless motors and ESCs.