A Stimpmeter is a device for measuring the speed of greens. It is actually a very simple device. A V-shaped length of metal with a notch near one end. A ball is placed in the notch and the Stimpmeter is lifted slowly until the ball is dislodged from the notch. How far the ball rolls after leaving the Stimpmeter in feet is the stimp reading. You would generally perform this measurement on a flat piece of green and do it in opposite directions and then take the average. Professional Tournaments generally have greens running between eleven and thirteen. Typical private courses might be around 9 or 10. Your average municipal course is probably more like 8.