Ranger Survey Systems Using Magnetometers & Accelerometers for Directional Drill–Hole Surveying Technical Presentation.
MAGNETS Taylor Wakeland, Hannah Fisher, Dawn Chambers & Rachael Kugler.
Compasses D. Crowley, 2008. Compasses To understand how compasses work.
Compasses D. Crowley, 2008. Compasses To understand how compasses work Wednesday, August 05, 2015.
