Ritchie Venture Sail Boat Compass w/Clinometer - Bulkhead Mount - Black. 88M) to 36' (10.68M) in length. Venture Bulkhead Compass Specifications for Ritchie SR-2 Venture Sail Boat Compass w/Clinometer: Manufacturer: Ritchie Color: Black Features of Ritchie SR-2 Venture Sail Boat Compass w/Clinometer 3-3/4" CombiDial 4-5/8" (118mm) to 4-13/16" (122mm) mounting hole Blue LED Night Lighting Adapter plate (BK-0034) available to retrofit existing HV-76 and HV-77 installations Vertical Mounting Angle Through 40 Degrees Clinometer (INC-45) included Steady Quick Lock-On Performance Exclusive 5-Year Ritchie Warranty Protective Front & Back Covers are Included SR-CM2 Compensator module is sold separately Protective Cover: Included: BK-0019 ASY (Front); BK-0020 (Back) Wheelmark Certified: Yes Approx. Shipping Weight: 2lb (.91kg) Package Contents: Ritchie SR-2 Venture Sail Boat Compass w/Clinometer Ritchie SR-2: SR-2 Venture Sail Boat Compass w/Clinometer - Bulkhead Mount - Black