It requires a very good ameter to measure currents that our servos use. most analog meters will measure a steady state current reasonably well but; our servos draw current in big gulps followed by a lesser holding current. About the only way to see this is to use a recording ameter or an oscilloscope. Even using the oscilloscope needs some finess to measure peak currents and not have the measuring device effect the accuracy of the readings, i.e. most methods require inserting a finite resistance in series with the load being measured and this will lower the current drain the device would see otherwise. Of course almost any method of measurement are usually better than none and you can, at the very least, pick up relative changes under varying conditions. Just don't trust a normal ameter to give you true data unless you know how to adjust for the added impedance.