he vectors are there to represent the influence the earth's magnetic field has on the needle and other objects but they di not constitute the magnetic fiels!DeleteGabriele Contessa5 January 2013 at 16:29sorry for all the typos--I am writing this from my phone!DeleteJeffrey Ketland5 January 2013 at 16:50Hi Gabriele,i hope you would not want to claim that the compass needle points towards the north p