Mercury - CriseLog Gauge Boat Speed & Trip Tracking Black Face Black Bezel 79-8M6020032. OverviewThis Cruiselog gauge gives you a steady look at speed and trip information in a simple, no-nonsense format. Out on the water, the needle settles quickly, so you're not dealing with jumpy readings when the boat hits chop or shifts weight. It's the kind of gauge that helps you keep an eye on your pace without pulling your focus away from the run. After a few outings, it just becomes part of your natura