ALTITUDE SETTING (Altitude calibration)

"Calibrating" an altimeter means setting it to the known altitude at a particular point. You can reset the altitude by using . Actual altitude values are displayed in various places: on signposts, and on contour lines and spot elevations on maps. Altitude must be "calibrated" in relation to the ambient atmospheric pressure.

Note: The average pressure at sea level is 1013.25 hPa.

To obtain the most accurate altimeter function, you can adjust the hemisphere and climate zone based on your geographical location. In the "T-TOUCH" / "SETTINGS" / " Calibration"/ "Altimeter" functions, select your climate zone either manually or automatically, using the simplified Koeppen climate classification (see illustration below). If the watch is not set ("Not Set"), the standard atmosphere model is used: set temperature at sea level = 15°C, mean pressure at sea level: 1013.25 hPa.