Ritchie Explorer Compass - Bracket Mount - Black. These Ritchie Compasses perform even in the harshest environments thanks to their powerful magnets that attract metal easily and lock-on to magnetic forces. For instance a Ritchie B51 Navigation Compass has powerful magnets that attract objects close to the compass needle which increases accuracy. This device also has internal illumination for reading even in low light situations. For a trusted directional tool that will vastly increase your efficiency while maneuvering or navigating choose the Ritchie Explorer B-51 51in Compass. Specifications for Ritchie B-51 Explorer Compass: Manufacturer: Ritchie Color: Black Features of Ritchie B-51 Explorer Compass 2-3/4" Easy to Read Direct Reading Dial Adjustable and Removable with Bracket and Thumbscrews Internal Green Night Illumination Built-in Compensators to Easily Adjust for Deviation Scientifically Matched Sapphire Jewel & Hardened Steel Pivot Dial Movement Powerful DirectiveForce Magnets for Fast Heading Lock-on Movable Sun Shield High Temperature Composite Construction for Extended Operating Range 100percent Repairable Exclusive 5-Year Ritchie Warranty Protective Cover: None Approx. Shipping Weight: 1lb (454g) Comes standard with 12V lighting. 6 & 24V lighting options are available. Some custom built OEM models may have different lighting. Contact Ritchie for replacement lighting. Package Contents: Ritchie B-51 Explorer Compass Ritchie B-51: B-51 Explorer Compass - Bracket Mount - Black