Mercury - Tachometer 7K Engine Speed Monitoring White Face Brushed Bezel 79-8M6020062. OverviewThis 7,000-RPM tachometer gives you a calm, steady feel for how the engine's running, even when the boat moves through chop or wind. The needle sweeps smoothly, so checking your RPMs becomes a quick, natural glance instead of a guessing game. Out on the water, it reacts in a way that matches what you hear and feel from the engine. It's a simple, everyday gauge that slips right into your normal scan acr