E Instruments manufactures and markets instrumentation solutions for power, process, pharmaceutical, light, industrial manufacturing, institutional, food, OEM, and HVAC markets. It offers temperature, pressure, signal, and blackbody calibrators; combustion/emissions gas analyzers to monitor the combustion efficiency of HVAC boilers; portable and permanently mounted transmitters, and air balancing equipment for the monitoring and improvement of indoor air quality; and test and measurement equipment. The Company also operates calibration laboratories that provide calibration services, such as gas calibrations using EPA protocol gases and NIST traceable calibration services.