[ Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signaling, checking, life-saving and teaching apparatus and instruments, namely, electric thermostats with and without regulators, water heater controls, water level indicators, water filter controllers, and fittings with motion detectors and infrared sensors; ] apparatus and instruments for conducting, switching, transforming, accumulating, regulating or controlling [ electricity, light, volume, t...