Perimeter-lighted Black dial with bold White graphics, Black aluminum bezel, contoured White pointer and flat glass lens.
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.
∗Pitot tube sold separately.
4" - Hole Size: 3.375" (85mm)
Specifications:
Anti-scratch glass lens
Plastic Cases for corrosion resistance and long life
Perimeter-lighted Black dial
Can be adapted for 24 VDC systems
Factory P/N SE9463
*Sold as an Individual
**Gauge Cover not Included
Euro Black 4 Speedometer - 55MPH (Mechanical) 4 - Hole Size: 3.375 (85mm)
Electronic speedometers operate by capturing pulses produced by a sensor. the pulses are then electronically converted to a speed reading very much like a tachometer converts ignition pulses to RPM.
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.