Time recording apparatus; measuring or testing machines and instruments, namely, meters for obtaining information related to electricity, gas, temperature, water, and other data, which are used to measure and reduce energy usage and predict energy demand; dynamometers; water level gauges; pressure measuring apparatus; pressure gauges; thermometers, not for medical purposes; temperature indicators; calorimeters; flowmeters; heat regulating apparatus; hygrometers; detectors, namely, leakage det...