This video demonstrates how to us a magnetic compass to determine the direction of the local magnetic field: the north end of the compass needle points in the direction of the field. Also demonstrated is the field of a bar magnet, visualized using one or more compass needles. This demonstration was created at Utah State University by Professor Boyd F. Edwards, assisted by James Coburn (demonstration specialist), David Evans (videography), and Rebecca Whitney (closed captions), with support from Jan Sojka, Physics Department Head, and Robert Wagner, Executive Vice Provost and Dean of Academic and Instructional Services.