Mercury - Cruiselog Gauge Speed & Trip Monitoring White Face Chrome Bezel 79-8M6020020. OverviewThis Cruiselog gauge gives you an easy, steady way to keep track of your speed and how far you've traveled. The needle moves with a calm, predictable sweep, so you don't get jumpy readings when the boat shifts. Out on the water, it becomes part of your natural dash check-quick look, clear info, and back to running the boat. Clean, simple, and useful on any outing.. Key Features • Clear Speed Scale - S