da Rock

As long as we're on the subject of "servo testing", I'd actually like to test some old servos and find out their speed and torque. Do either of these two testers actually help with that or do they just find the center and maybe work the arm back and forth?

I figure the torque test should be out of possibility for any simple electrical device. It would seem that some kind of external scale would be required. But seems the speed check ought to be possible.