Sierra 65693P Lido Series TachometerThe hottest selling white dial line! A comprehensive family of instruments for most engine types.Features: White dial, black numerals, black pointer with fire-orange tip.; Scratch resistant curved glass lenses, with polished stainless steel, near flush bezels; U.S. and metric scales, with ISO symbols.; Optional add-on square bezels for modular appearance; White perimeter and red thru-dial lighting.; Specifications: Dial Range: 0-7000 RPM; Size: 3"; Tachometers (Electric): O/B & 4-Stroke Gas Engines; Sender Code: O/B ALT./COIL; Tachometer: Mariner 30 & 40 HP (2-cylinder) engines require a module (Mercury P/N 17461A2); Voltage: 12 VDC; 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;