Difficulty: Moderately Easy
Step1
Choose a vehicle compass with large letters or numbers so it is easy to read. Test the compass by holding it at arm's length and seeing if the letters are legible.
Step2
Pick a liquid compass with a slow spin that allows for easy reading.
Step3
Find a compass with good suction cups for mounting to the windshield.
Step4
Choose a digital vehicle compass with a backlit screen for night viewing.
Step5
Buy a vehicle compass that requires no wiring to operate.
Step6
Pick a compass with a sunshade that blocks out glares and increases visibility in bright lights.
Step7
Verify that the liquid compass adjusts for magnetic interference generated by the car. Without this adjustment, the compass will give inaccurate readings.
Step8
Test the pivot arm on a windshield-mounted model and choose one with a good pivot angle. The angle allows for driver adjustments with ease.
Step9
Buy a battery-operated vehicle compass with an automatic shut off feature to save on battery and compass life.
Step10
Attach a postage-stamp-sized display compass to the rear view mirror instead of attaching a two inch ball to the windshield. These small vehicle compasses are button activated, mounted with Velcro and have a sensor behind the mirror.