Anemometers; Hygrometers; Alarms for the detection of inflammable gases; Carbon monoxide detectors; Digital multimeters; Digital pH meters; Electromagnetic apparatus used to generate or measure magnetic fields; Electronic testing equipment, namely, sound level meters; Gas testing instruments; Magnetic wall stud finders; Magnets for industrial purposes; Measuring apparatus, namely, clamp meters for measuring electricity; Measuring apparatus, namely, laser distance meters; Metal detectors; Mete...