Lido Pro Series gauges are fog-free with a stylish domed glass that sheds water, resists scratching, and looks great anywhere. Tough, magnetically shielded, silicone-dampened vector movements are the ultimate in accuracy and reliability. The Lido's polished stainless steel bezel looks great in most dashes. Black text on a clean white background offers maximum daylight readability, while night visibility is provided by white perimeter and red through-dial lighting. Sierra Part #59737P. Features:• White dial, black numerals, black pointer with fire-orange tip• White perimeter and red thru-dial lighting• Scratch-resistant curved glass lens with polished stainless steel, near-flush bezels• Fog-resistant design• Complies with SAE J-1810• Dial Range: 0-7000 RPM• Sender Code: O/B ALT./COIL• Tachometer: Mariner 30 & 40 HP (2-cylinder) engines require a module (Mercury P/N 17461A2)• Current Draw: 0.10 - 0.15 A• Operating Temperature: -40C to +70C• Ingress Protection: IP65• Bezel O.D.: 3.74"• Housing O.D.: 3.39"• Hole Size: 3.43" White perimeter and red through-dial lighting Fog-free | Lido Pro 3" Tachometer in Red