rover67
Rising Sun Member
Come now soon-to-be PE, 60MPH is how many miles per minute? Bueller, Bueller?
Mile markers, a flat section of highway, a steady foot and the second hand on your watch. Assuming you wind your watch (and let's be honest, who doesn't, right?), you don't even need power or satellites. That is the true Cruiser speedo checking method.
before I had a GPS I'd spend my time on the hwy doing this. kinda fun.