Self induction
Mutual induction
Fleming's right hand rule
Same principle of D.C. motor
Set the tester in correct range
Make looping the conductor more than once through the core
Make sure the induction is at zero on the scale
Read the indicator position on the scale
Suitability for the type of load (inductive/capacitive/resistive)
PF range of meter (lagging/leading/unity)
Voltage and current range of meter suitable to load
Current and PF range of meter matching to load
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Digital storage oscilloscope
Dual storage oscilloscope
Digital storage oscillator
Dual storage oscillator