Measuring or testing devices and instruments, namely, instruments for measuring length, distance measuring apparatus, brake fluid testers, position detectors, encoders, speed indicators, accelerometers, anemeters, anemoscepes, water flow indicators, water gauge meters, pressure gauge, temperature indicators, voltmeters, ammeters, power measurement apparatus; power distribution or control devices and apparatus, namely, electric switches, circuit breakers, power controllers, motor control appar...