The SPEEDOMETER (F32910) is an electronic speedometer that works by recording pulses produced by a sensor and electronically converting those pulses to a speed readout, similar to how a tachometer translates ignition pulses to RPM. Utilizes Pitot tube speedometers, which work by applying pressure to the tube as water draws into it. The force is then sent through flexible tubing to the bourdon tube movement within the speedometer cap, where the motion process converts it to a speed readout. Faria Beede Instruments' Euro 4?? White Dial/Black Aluminum Bezel In-Dash Mount Mechanical has a perimeter-lighted white dial with bold black illustrations, black aluminum bezel, molded white indicator, and flat glass lens with an 80 MPH measurement limit. Key Features: High-quality engineering A high-quality design ensures a longer lifespan It is of premium materials composition Various speeds are available Construction that is tough and dependable 80 MPH Euro White 4" Speedometer (Mechanical) Specifications: SKU: F32910 Weight: 0.54 LBS Size: 4-inch Hole Size: 3.375" (85mm) Color: Euro White Brand: Faria Condition: New