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Hero999 said:But you need to know how many poles there are on tha amature; a 5 pole motor will give a totally different reading to a 3 pole motor.
Sceadwian said:You could do it if the meter supported a frequency measurement mode. Place a magnet on the device to be measured (or two or more to maintain ballance) and make a coil to feed into the meter. It really depends on the voltage required to trigger the meters frequency measurement.