36 



HANDBOOK OF MAGNETIC COMPASS 



Figure 24 illustrates such relationships. The following simple rules 

 will assist in naming errors and in converting from one heading 

 expression to another : 











Figure 24. — Heading relationships (variation, deviation, and headings). 



(1) Compass least (less than magnetic heading), deviation 

 east. 



Compass best (greater than magnetic heading), deviation west. 



