Sierra Eclipse 7K Tachometer 68399P3 in. gauge displays the revolutions per minute of an outboard or I/O marine engine. Eclipse 7K Tachometer 0-7000 RPM range 3 in. diameter Ideal for outboards Eclipse series Black face Black bezel White numerals Blue and white graduations Scratch-resistant domed glass lens Perimeter lighting for excellent readability at night US and metric scales with ISO symbols where appropriate