Venture Bulkhead Combidial CompassTheVenture SR-2 is designed primarily for sailboats 16' (4.88M) to 36' (10.68M) in length. Venture Bulkhead Compass Features:3-3/4" CombiDial4-5/8" (118mm) to 4-13/16" (122mm) mounting holeBlue LED Night LightingAdapter plate (BK-0034) available to retrofit existing HV-76 and HV-77 installationsVertical Mounting Angle Through 40 DegreesClinometer (INC-45) includedSteady Quick Lock-On PerformanceExclusive 5-Year Ritchie WarrantyProtective Front & Back Covers are IncludedSR-CM2 Compensator module is sold separatelyProtective Cover: Included: BK-0019 ASY (Front); BK-0020 (Back)Wheelmark Certified: YesApprox. Shipping Weight: 2lb (.91kg)