Ideal for inboards, including diesels, White Premier Pro gauges feature white dials with contemporary black and blue graphics that offer superior illumination at night and superior light pipe illumination. Fog-resistant design offers maximum visibility in all conditions. Domed glass lenses resist scratches. Sierra Part #62561P. Features:• Full automotive type lighting with no "halo" around dial edges• When illuminated, black dial grads become red, pointer lights red• White dial, black graduations/numerals (metrics in blue), red pointer staff• Scratch-resistant curved glass lenses with polished stainless steel, near-flush bezels• Optional add-on eyebrow or square bezels• Fog-resistant design• Complies with SAE J-1810• Dial Range: 0-7000 RPM• Tachometers (Electric): O/B & 4-Stroke Gas Engines (Mariner 30 & 40 HP (2 cylinder) engines require a module (Mercury P/N 17461A2)• Sender Code: O/B ALT./COIL Domed glass lenses resist scratches | White Premier Pro 3" Tachometer in Red