Precise Oxygen Equipment, formerly Nelson Oxygen, is the highest regarded oxygen solutions available to the aviation consumer. Spanning a wide range of applications, from the built-in system on the Cirrus SR22 with its simple and efficient electronic display of oxygen quantity and a toggle switch for activating the flow of oxygen in the cabin, to the Columbia 400 with the display and actuation integrated into the instrument flat panel display, Precise Flight leads the way in general aviation oxygen systems.