That is, digit, period, and colon. Hopefully the program output is self explanatory. Declination is the magnetic declination at the specified latitude and longitude. A magnetic compass reading can be corrected to the direction relative to true north by adding the declination to the compass reading. Inclination is the angle a vertical reading compass will show at the location.
Intensity is the magnitude of the magnetic field at the location.
Installing Different Models Supplied with this release are 5 geomagnetic models. The later .pdb format is ready to install in GeoMagneticInfo. GeoMagneticInfo can use only one model at a time. If at a future date you wish to use a model other than the one currently installed, simply install the new .pdb model into your Palm Pilot with your Palm installer. The previously installed model will be deleted automatically.