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MAG3110 calibration of devices that don't move

Question asked by Michael Callahan on Jun 21, 2016
Latest reply on Oct 26, 2018 by Anthony Duhamel

I have a device that doesn't move after being turned on but I would like to know which direction it is facing.  The MAG3110 magnetometer calibration instructions involve moving devices around (figure 8 or similar) to fit a solution to the resulting range of measurements.  How reasonable is it to assume that I could determine the hard and soft iron calibration for a small sample of PCBs/devices and use it for all others with the same layout?