Definition: A device used to measure the speed of greens. It's very low-tech, essentially just a small metal ramp that is angled down to a flat part of a putting green. A golf ball is released down the ramp. How far the ball rolls determines the "stimp" or stimp rating of the green, which is a measurement of green speed. The farther the ball rolls, the faster the greens.
The Stimpmeter was invented by a fellow named Eddie Stimpson, but it wasn't until the USGA adopted and modified the device in 1978 that it was accepted as a universal method for measuring green speed.
