The principle of the barograph is same as that of the aneroid barometer. He was a pioneer in using the aneroid barometer for measuring altitude. He was recognised for his temperature-compensated aneroid barometer. In 1886, the Faura Aneroid Barometer was released. The control system used a pneumatic/vacuum system, an electric system and an aneroid barometer/altimeter. Inside the instrument, there is a sealed aneroid barometer. An aneroid barometer was carried to mark out 50 feet contour levels. For example, an aneroid barometer uses rotary position as the signal to convey pressure information. The rocket carried an aneroid barometer, thermometer, and a camera triggered when the parachute opened.