Mercury – Water Temperature Gauge C–H (120–240°F) | Cooling System Monitoring | White Face | Chrome Bezel | 79-8M6020022Mercury Water Temperature Gauge CH (120240F) Cooling System Monitoring White Face Chrome Bezel 79 8M6020022 OverviewThis 120240F water temperature gauge gives you a steady, easy read on how warm the engines running. The needle moves with a slow, predictable sweep, so real temperature changes pop out without bouncing around. Out on the water, it becomes a quick part of your natural scanglance, note the number, and keep running. Its a clean, simple