The meter referred to 15, 25, 50, 100, 150 is the meter thats is there for every shot. But by breaking it down into smaller increments you dont have to try and guage where 7ft is on a 50ft meter.... There is a putter pal that you can buy for credits that shows for example on a 15ft meter there would be a scale that might show you how far back to draw for a 5ft putt..... It much easier to divide the # backswing increments by the length of your meter- for example 50ft meter ghost putter has 10 increments on the backswing- watch the backswing as it goes back. Thats roughly 10ft each increment on say a fast green, on very fast it might be 13ft and on tournement 15ft....