Thus when you turn your compass so that the needle points north on the compass dial, your course arrow will point the exact direction of your course.
(you; turn; your compass) (the needle; points; north on the compass dial) (your course arrow; will point; the exact direction of your course; T:when you turn your compass so that the needle points north on the compass dial)
you the needle your course arrow
turn points will point
your compass
north on the compass dial
the exact direction of your course T:when you turn your compass so that the needle points north on the compass dial