SWINGMATE TAKES THE GUESSWORK OUT OF YOUR SWING
electronic devices for determining the speed of a golf club head through an impact zone at the instant of impact with a golf ball; electronic devices for determining the speed of sports impact clubs such as baseball bats or tennis racquets through an impact zone at the instant of impact with a ball or other missile used in playing the respective sport
Abandoned · December 6, 1994 · 74607671 ·