High-performance compasses with PowerDamp Plus are engineered to prevent spinning caused by high-speed pounding and vibration. A lightweight baffle restricts sideways motion of the flat blue card, allowing it to move freely for precise and rapid alignment. Extra-large steel pivots and jewels give accurate readings even under pounding offshore conditions. Features include internal gimbal, built-in compensator magnets, 12V DC night lighting and movable sun shields (except 5000). Card Type: Flat Mounting Style: Flush Case Material: Reinforced polymer Lubberlines: 45 Clinometer: No Lighting: 12V Cover/Shield: Yes, except SS-5000 Warranty: Five years