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NE Iowa | I have used- GPS Speedometer & Odometer - by COOL NIKS, for a few years now.
Free so has a few ads, shows current and average speed and distance covered.
Can go to settings and change the precision to have 0 1 or 2 decimal places in the reading. choose mph, kph, m/s, or knots.
I am sure there are others just as good, I found this 1 a few years ago and just didn't look much more.
Or just stick in a raven 440/450 with a puck on the cab roof for speed. I'll bet you have one laying around. | |
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