This has been getting on my nerves recently!! It maybe me being very stupid, Looking at these dial faces below, as you can see ones mph and ones kmh, what I don't understand is for example 100kmp is roughly 60mph but is the number on these dials are in the exactly the same place, I know a lot of people cover over the k on the dial face and put a m but how can this be right, I know people use speedo converters but but that doesn't change the dial face?? If someone could help that would be great, I might be having a very dull moment I'm not sure