Demand Flow Calibration Gas Regulator C10
This is an Demand Flow Calibration Gas Regulator Nickel Plated Brass C10. This is used to bump test and calibrate different gas detection devices.
Vintage 1995 YES-204 CARBON DIOXIDE MONITOR / DATA LOGGER
YES-204 Air Quality Monitor manufactured by Young Environmental Systems Inc. This type of environmental monitor is designed to track pollutants and air quality, providing real-time insights into the surrounding environment. Functionality: Air quality monitors typically use one or more sensors to detect specific air pollutants or environmental factors like temperature and humidity.