Anemometers; [ Frequency meters; Hygrometers; ] Infrared thermometers, not for medical purposes; [ Level gauges; Oscillographs; Seismometer; Speed indicators; Stroboscopes; Surveying instruments; Telemeters; ] Digital multimeters; [ Electric meters; Electronic and optical communications instruments and components, namely, optical receivers; Laser speed detectors; ] Measuring apparatus, namely, clamp meters for measuring electricity [ ; Photographic exposure meters; Scientific instrumentation ...