9 LABORATORY INSTRUMENTS, FACILITIES, AND EQUIPMENT, FOR MEASURING, REGISTERING, RECORDING, REGULATING, OR CONTROLLING FORCES AND CONDITIONS, SUCH AS POWER, HEAT, LIGHT, WEIGHT, VELOCITY, COLOR, PRESSURE, WEATHER CONDITIONS, ETC.; AND LABORATORY INSTRUMENTS, FACILITIES, AND EQUIPMENT, FOR TESTING OR INVESTIGATING ALL THE VARIOUS PROPERTIES OF VARIOUS MATERIALS AND SUBSTANCES