Navigational compass measures 3 inches approx diameter and looks like sundial when we open its cover - Inside the cover magnetic functionality of compass is there which will show you Magnetic poles - Beautiful compass can be gifted any your loved once's.To read the time, Place the sundial in the north direction and set the local latitude angle with the curved bar. The suns shadow cast by the vane will reflect the local time. The adjustable legs allow the compass to be placed level. The needle lock allows the compass to be transported without damage.This is a functional reproduction sundial compass.