http://www.ludanstore.com/new-auto-vehicle-navigating-adjustable-car-compass-ball

100% Brand New Navigation Compass Ball
Precision engineered
Floating Dial with sapphire bearing to ensure quick movement and optical precision
Liquid filled compass balls which rotates automatically to indicate the direction
Waterproof, durable and long lasting.
Easy to read precision dial
With adhesive tape
Built in Accuracy compensators
Windshield or Dash Mount
Suitable for Car, Caravan and Truck