Ritchie Venture Compass Combi-Dial With Flush Mount And 12V Green Night Light (Black, 3 3/4-Inch)

The SR-2 is a 3 3/4″, Blue Combi-Dialed, bulkhead mounted compass. The mounting hole need is 4 1/2″ and the compass can be mounted from a verticall surface to 45 degrees. The compass also comes with the INC-45 Clinometer standard. 12-24V Blue Night Light, 5 yr warranty.