9 Piece Ball End Hex L-Key Set - Metric,CNYST Power Quality Analyzer Three Phase Energy Power Quality Analyzer Meter with 4 Current Clamp Sensor Range 0.10A to 100A Record Storage Function LCD Color Screen: Amazon.com: Industrial & Scientific,CNYST Power Quality Analyzer Three Phase Energy Power Quality Analyzer Meter with 4 Current Clamp Sensor Range 0.10A to 100A Record Storage Function LCD Color Screen: Amazon.com: Industrial & Scientific,POWER QUALITY ANALYZER PQ3100 | Hioki,Adjustable Potentiometer, 5W 4.7K Ohm Uxcell WX112(050) Single Turn Wire Wound Potentiometer for Industrial Controls and Robotics: Amazon.com: