4.3. Measurement Method
This manual will not describe how to make absolute observations. This information is given in two comprehensive manuals that every magnetic observatory should have:
Guide for Magnetic Repeat Station Surveys Newitt, Barton, and Bitterly (1996), and the
Guide for Magnetic Measurements and Observatory Practice Jankowski and Sucksdorff (1996).
Additional information can be found in Wienert (1970) and Stuart (1984).