Casio 3069 Manual page 141

3. Use A (+) and C (–) to set the calibration value in the units shown below.
Temperature
Barometric Pressure
• Pressing A and C at the same time returns to the factory calibration
(OFF).
4. Press E to return to the Barometer/Thermometer Mode screen.
0.1°C
1 hPa
E-139