I got a free GPS unit form Finning Tractor; it’s called the CAT Finder hahaha it is a Garmin, basic GPS.
I Velcroed it to the bike to test the Speedo, and both the GPS and my Speedo were dead on, are these GPS units very accurate.
I have changed my gears so was very interested to know if my calculations
were accurate in the Speedo recalibrator, I guess so!
It is very nice to know what my speed is, puts the mind at rest when around cops.