The Eagle Combustion Analyzers „¢ makes combustion analysis as easy as turn the power on, select the fuel and go! The Eagle product line simplifies the complex efficiency process from basic combustion analysis to full system maintenance. Whether you're new to digital combustion analyzing or tired of scrolling through layers of navigation menus, the Eagle offers a quick start-up and a straightforward interface with a professional combination of features. Eagle 3: C127 - Offers the same benefits of the Eagle 2 (C125) with the additional ability to measure Nitric Oxide (NOx). This allows technicians to work in commercial and light industrial applications measuring Nitric Oxide at 1 ppm resolution.