All Ritchie compasses are built with ultra lightweight dial assemblies. Therefore, we don&';t need to use heavy fluid to artificially dampen the movement. Our compasses are filled with a highly refined, very low-viscosity dampening fluid which allows the dial to move smoothly within the bowl and lock on to magnetic north faster than other compasses. Ritchie&';s Dampening Fluid is also refined for brilliant, optical clarity. Easy-to-Install on Windshield or Dash Two-Sided, Self-Adhesive Mounting Pads Included 2" Direct-Reading, High Visibility Dials Reversible Bracket allows a mounting range of over 300 degrees from overhead, through angled and vertical mounts to horizontal surfaces These mounting position options and your choice of mounting hardware permit mounting on everything from windshield or supporting frame structures, to slanted dashboards and consoles, to almost any flat, angled or vertical surface Internal Green Night Lighting High Temp Composite Construction for Extended Operating Range Hardened Steel Pivot and Sapphire Jewel Movement Built-in Compensators Color: Black Exclusive 5-Year Ritchie Warranty