Altitude and Pressure Display Device using a few off the shelf parts. Following a brief search, he zeroed in on the BMP 180 sensor which can measure temperature and pressure, and which is ...

Barometers measure this pressure decrease to estimate altitude. But, weather changes can also have an effect on air pressure, so a barometric altimeter has to be recalibrated periodically using a ...

Toriccelli also went on to develop the mercury barometer, an instrument used to measure atmospheric ... factors affect the density of air. Most measurably, as altitude increases, air becomes ...