It took me a long time before i realized that the putter distance is set at the lowest green speed. So if you are an ametuer using a 15 yard putter, with a 7.4 green speed, then at the half way mark, on the meter, the putter yardage is 7.5(half). Likewize if you are a legend using the same 15 yard meter, then halfway is no longer 7.5 yds, the line to the right of halfway mark is now the new 7.5 yard spot. And it verys for every green speed. The meter is only true at the 7,4 green speed. I don't know if this will make sense to any1 but me, but i hope i helped a little.