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Table 3. Example using feet and Fahrenheit.
Lower point Higher point
Set reference altitude (real altitude) 3280 ft
Displayed altitude 9840 ft
Real outside temperature +36.3 ºF +18.9 ºF
Normal (table) temperature +47.3 ºF +23.9 ºF
Temperature difference (= real - normal) -9 ºF -5 ºF
Sum of temperature offsets -9 ºF + -5 ºF = -14 ºF
CHAPTER 4 BAROMETER MODE
The Barometer provides you with:
An adjustable unit of measure hPa or inHg; hPa range 300 to 1100 hPa, inHg range 8.90 to
32.40;
A resolution of 1 hPa or 0.05 inHg;
A one hour interval measuring to estimate barometric trend;
An automatic 4-day memory of atmospheric pressure;
Temperature compensation (temperature does not effect the pressure within the specified
temperature range);
A temperature range -20º to 60ºC or -5º to 140ºF;
A temperature resolution of 1º C or F; and
An Altimeter-Barometer use feature. Refer to Chapter 3, Altimeter-Barometer Use for more
information.
NOTE: To acquire true temperature reading, take the Observer away from wrist and allow it to
adjust to the ambient temperature for 15 minutes.