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post #9 of Old 08-12-2019 Thread Starter
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Re: GPS determined speed

Originally Posted by SloopJonB View Post
I recently heard that automobile speedometers are changing over to GPS from physical sensors on the car.

I suspect that means GPS is pretty accurate.
at best a car speedometer show accuracy/precision to integers.

Most boat speedo do .1 knot. My B&G dies .01

Precision is perhaps a better word... GPS appears to be only precise to .1 knots.

pay attention... someone's life depends on it
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