I would like to introduce my new project. This is proton-precession mag with SD data logger and GPS. It is possible to analyze the readings on the built-in LCD or to save the values of the magnetic field strength with their GPS coordinates to a SD/MMC in order to process them later on a personal computer.
Project site: http://geophysdevices.com/
User manual: http://geophysdevices.com/manual.php
Device:

LCD display:

Software:
Project site: http://geophysdevices.com/
User manual: http://geophysdevices.com/manual.php
Device:

LCD display:

Software:

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