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How to calibrate the Casio Pathfinder barometer

I wrote three months ago an article about how to understand the barometer readings on a Casio Pathfinder watch and now is time for making these readings more accurate. It really doesn’t matter what Casio Pathfinder model are you wearing (mine is PAG80-1V), basically it should be the same procedure in calibration the barometer to be more accurate.

I recommend for barometric calibration to use the location where you spend the most of your time, for me is my job place, the computer desk I’m working on and where I am checking for weather changes on a daily basis. I recommend also, to do not take off your watch from your wrist!

So, to make your wrist barometer work like a scientific barometer (it’s an exaggeration, of course) you’ll have to do the following:
1. google it for the local barometric pressure, eg. Toronto atmospheric pressure. Now that you have the real value get to the next step.
2. press the barometric button (mine is at the right-middle). You should have now the value displayed on your watch screen.
3. press now the adjust button for a couple of seconds until the screen is flashing.
4. press the select button (on my watch, Casio Pathfinder PAG80-1V, is on left) until is flashing OFF on the screen.
5. now is finally the adjusting phase. Press top-right / bottom-right buttons to adjust the barometer reading to the right one (you have been google it at the beginning of the calibration).

You’re done.

Remember, use for this calibration your location your spend the most of your time and do not take the watch, off your wrist. Of course is better if you’re adjusting as close is possible to the point in the town the barometric pressure measurement is taken, but on the other hand if your watch is calibrated outside you’ll have either to go outside all the time to read the atmospheric pressure or to assume all the time that there is a difference between what weather is showing your watch and the real weather from out there, thinking of the fact that the walls can interfere with your barometric readings.

Thanks for reading!

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