Ritchie B-81 Navigation Voyager Compass 3-Inch Dial with Bracket Mount (Black) Mid size bracket mount, more stable and comes with a Flat-Card dial for ease of navigational course changes. 3" (76mm) Flat-Card Dial Bracket mounted compass, can be mounted on deck or dash; allows compass to remain at proper viewing angle. Night lighting: 12V Green 5 year warranty