He is one of the methods we use in Britain. Put your cycling shoes on and measure your inside leg in inches to the ground. Multiply the result by 1.08". This number is used to set your seat height. Place one pedal at its lowest position with its crank parallel to the seat tube and measure from the top of the pedal to the top of saddle. You should only be a gnat's cock out in your correct seat height. Best wishes and be lucky. Michael Butler Huntingdon UK.