Abacuses; Ammeters; Anemometers; Microphones; Pedometers; Scales; Scanners; Slide-rules; Compasses for measuring; Computer keyboards; Computer peripheral devices; Data processing equipment, namely, couplers; Electric door bells; Electric meters; Electrical annunciators; Fire alarms; Flashing safety lights; Covers for computer keyboards; Measuring spoons; Mouse pads; Pocket calculators; Protective helmets; Smoke detectors; Wrist rests for use with computers; Computer mouse