Faria's (F45010) Newport SS Series In-Dash Mount Mechanical Speedometer Gauge. This speedometer can measure speeds of 0 to 60 miles per hour. Pitot tube speedometers work by applying pressure to the pitot tube when water is pumped into it. This pressure is then conveyed to the bourdon tube movement within the speedometer head through flexible tubing and translated to a speed measurement by the movement mechanism. The Newport SS range of nautical gauges is designed to be the next Modern Retro. This retro-style gauge incorporates the latest fog resistance technology. With perimeter lighting, day/night reading is a breeze. Key Features: Retro White Dial with illuminated rim Graphics in Black and Gray The lens with a domed shape that repels the fog Black pointers in two pieces Bezel in polished Stainless Steel Ring terminals with stud connector Edge-lighting in red Designed to perfection A high-quality design ensures a longer lifespan. Specifications: Brand: Faria SKU: F45010 UPC: 759266450103 Weight: 0.54 LBS Gauge size: 4" Style: Newport SS Measurement Limit: 60 MPH Operating Temperature: -22 degreeF to +185 degreeF Storage Temperature: -40 degreeF to +221 degreeF Torque: .57 - .80 Nm Mounting Hole: 3-3/8" (85 mm)