PanaVise 684-101 AMPS Tipper with Adjustment Wheel Suitable for electronics with AMPS mounting system Adjust tilt with thumb wheel (20 Tilt & 360 Rotation) Smooth adjusting action holds electronics firmly in place 20 degree tilt in all directions for optimal viewing by either the vehicle driver or passenger Rectangular AMPS pattern: 30mm x 38mm (1.181" x 1.496")