Mercury - Tachometer Gauge 7K Engine Speed Monitoring White Face Black Bezel 79-8M6020050. OverviewThis 7,000-RPM tachometer gives you a clean, steady read on how the engine's running without jumping around every time the boat leans or hits a wave. The needle has a smooth, relaxed sweep, so grabbing your RPMs feels quick and natural. Out on the water, it settles in fast-no fuss, no guessing, just a straight read that matches what the engine's actually doing. It's the kind of gauge you stop notic