PERFECT PRIME

Electronic detectors for observing and measuring the infrared spectrum, namely, infrared detectors; Gas detectors for detecting the presence of gas; Gas flow meters; Gas flow monitors; Gas meters; Gas sensors for measuring gas concentration; Gas testing instruments; [ Light switches; ] Pressure gauges; Pressure indicators; Pressure recorders; Pressure sensors; Thermal imaging cameras; [ Electric light switches; ] High pressure manometers; High-pressure manometers; Infrared thermometers, not for medical purposes; Scientific instruments, namely, electronic analyzers for measuring, testing and detecting contaminants and environmental pollutants