Ammeters; Dynamometers; Electric meters; Flowmeters; Frequency meters; Gas testing instruments; Hygrometers; Magnifying glasses; Measuring rulers; Meteorological instruments; Metronomes; Microscopes; Money counting and sorting machines; Oscillographs; Pressure measuring apparatus; Refractometers; Salinometers; Slide calipers; Solderers' helmets; Surveying instruments; Tachometers; Telemeters; Transmitters of electronic signals; Weighing machines

Apparatus and devices for improving energy efficiency, such as correcting or improving electrical power factor and/or reducing the amount of electrical reactive power being drawn at a location; Computer software, websites and electronic media in the field of renewable energy and energy efficiency, which enables modeling, assessment, return-on-investment, or technical design of such systems; Providing of services such as modeling, assessment, return-on-investment, technical design, consulting ...