SPEEDOMETER
#5
I am not looking for speed match. I just thought it was neat. I think I have it figured out. I just need to remember how to find the circumference of a wheel. I think it is pie times R square. Now what is pie and how do I figure out R square. It has been too long since school.
Actually this is very easy and inexpensive to build. I have spent less than $10 and have it built. All I need to do is calibrate it.
Les
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