Meco is an ISO 9001:2000 certified company that deals in manufacturing and exporting of Panel & Switchboard Instruments, Test & Measuring Instruments, Power & Harmonics Analyzers and Calibration Instruments. Meco offers 3? / 1? Clamp-On Power Meter with the model number 4500. The features of the 3? / 1? Clamp-On Power Meter with the model number 4500 are as follows: