Category for equipment and systems specialized in measuring and monitoring atmospheric environment in manufacturing sites. Includes specialized equipment for air quality monitoring inside and outside factories, exhaust gas measurement, dust concentration measurement, hazardous gas detection, and oxygen concentration measurement. Used for monitoring emissions from manufacturing processes, safety management of work environments, compliance with environmental regulations, and ISO14001 certification support. Covers continuous measurement devices compliant with Air Pollution Control Act, portable gas detectors, dust meters, exhaust gas analyzers, atmospheric sampling devices, and monitoring systems with data logger functions. Also includes high-precision analytical instruments capable of measuring chemicals and dust specific to manufacturing industries.