How efficient is a newer washing machine? In this video, I hooked up water meters, a wattage meter, and then weighed the ...

New Watt and Watt-hour Meter Calibrator Measures Power Accuracy to 0.005% and Energy Accuracy to 0.015% Waltham, Mass.—Rotek Instrument Corp. announces the release of the Rotek Model MSB100, a new ...

The watt hour meter measures the total energy supplied from the mains supply. For experimental convenience it is replaced by an indicating watt meter that indicates the instantaneous rate of energy ...

Hackers love to monitor things. Whether it’s the outside temperature or the energy used to take a shower, building a sensor and displaying a real-time graph of the data is hacker heaven. But the most ...