Mercury - Speedometer 65 MPH Boat Speed Monitoring White Face Brushed Bezel 79-8M6020064. OverviewThis 65-MPH speedometer gives you a clear, steady sense of how fast the boat's running without the needle dancing every time the hull shifts. The sweep feels calm and natural, making it easy to catch your speed with a quick look. Out on the water, the number you see usually matches the feel of the boat, which helps settle you into a comfortable pace. It's a simple, everyday gauge that just does its