that's a nice video Frank50,
thanks for the link!
i see that in the video that truck as a metric speedometer version of the 0-80 MPH
whereas my metric speedometer is the counterpart to the 0-90 MPH
so now we have evidence of all 4 speedometer variants
for interest sake, i counted the gear and worm teeth to calculate the exact turns to unit count in this metric speedo.
input shaft worm to first gear ratio 11:1
first gear-worm shaft to second gear-worm shaft ratio 8:1
second gear-worm shaft through idler to 1/10ths Odo wheel is 7:1
multiplying those ratios get us to 616 input shaft turns to 1 complete revolution of the 1/10th unit which counts up 1 KM
