Faria Beede 33811 Chesapeake Stainless Steel Speedometer (60 MPH) Pitot - 4', White
Pitot tube type speedometers operate by pressure from the water being forced into the pitot tube. This pressure is then transmitted through flexible tubing to the bourdon tube movement inside the speedometer head where it is converted into a speed reading by the movement mechanism. Offers wide range of speeds.