p strong Chesapeake Black SS 4 Speedometer - 80MPH Mechanical strong p p Perimeter-lighted Black dial with stylish Blue and White graphics polished stainless steel bezel contoured white pointer and domed glass lens p p 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 p p 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 p p lowast Pitot tube sold separately p p 4 - Hole Size 3 375 85mm p p strong Specifications strong p ul li Anti-scratch glass lens li li 12 VDC negative ground li li Can be adapted for 24 VDC systems li ul p Factory P N SE33705 p --- cis2 mmxtmJVt --- br
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