English 
boat mph gauge
We can provide boat mph gauge , kmh gauge, knots gauge. Boat mph gauge is speedometer gauge . Mph is miles per hour , which means miles per hour. Mile is also known as "mile" . One mile is equal to 1.6 kilometers . Although the vast majority of countries in the world have legislated to use metric units for unification, people in North America and the Commonwealth countries are still used to using imperial units . In terms of automotive instruments , the boats produced in these countries and regions and the cars exported to these countries and regions are usually speedometers with large characters on the outer circle and small characters . And when it comes to speed and length units , we are used to talking about miles , feet , etc . The United States , Libya and Myanmar. Many countries , for example, the UK itself adopted legislation to use metric units . Of course , the British system is still used in the civil society . It's good that we still buy vegetables by the catty and waist circumference by the foot .
The boat gauge speedometer can be an analog signal or a GPS signal. The boat gauge speedometer can be MPH, Knots or kmh. The traditional boat gauge speedometer is built-in. The typical pedal odometer is connected to a flexible shaft. There is a steel wire cable in the flexible shaft. The other end of the flexible shaft is connected to a transmission gear of the gearbox. The rotation of the transmission gear drives the rotation of the steel wire cable . The steel wire cable drives a magnet in the cover ring of the odometer to rotate . The cover ring is connected with the pointer and the pointer is placed at zero according to the electronic power . The speed of the magnet rotation speed causes the change of the size of the magnetic induction line . Equilibrium is pushed away from the pointer . This type of speedometer is easy to use . However , along with the development trend of electronic information technology , many ship instrument panels have already applied electronic device ship speedometer . One common way is to obtain data signals from the speed sensor on the gearbox , and shift the pointer or indicate data according to the change of the number of single pulses.
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