Testing Equipments
Voltmeter (Measures voltage)
Ohmmeter (Measures resistance)
Ammeter, e.g. Galvanometer or Milliammeter (Measures current)
Multimeter e.g., VOM (Volt-Ohm-Milliammeter) or DMM (Digital Multimeter) (Measures all of the above)
LCR meter - inductance (L), capacitance (C) and resistance (R) meter (measure LCR values)
Power supplies
Signal generator
Digital pattern generator
Pulse generator
Oscilloscope (Displays voltage as it changes over time)
Frequency counter (Measures frequency)
And connecting it all together
Test probes
Solenoid voltmeter (Wiggy)
Clamp meter (current transducer)
Wheatstone bridge (Precisely measures resistance)
Capacitance meter (Measures capacitance)
LCR meter (Measures inductance, capacitance, resistance and combinations thereof)
EMF Meter (Measures Electric and Magnetic Fields)
Electrometer (Measures voltages, sometimes even tiny ones, via a charge effect)
Probes
RF probe