The golf ball is on the face of the club for about 300 microseconds.

In that precise instant a lot of things have to be done exactly right. Within one millisecond, the Vector Pro Launch System takes two photos of the ball. Then its sophisticated software instantly analyzes those photos and displays the data.

The accuracy of the Vector Pro Launch System is impressive. It measures ball speed within 0.5 mph, launch angle within 0.2 degrees, backspin and sidespin within 150 rpm and side angle within two degrees.

The technology that makes the Vector Pro accurate and easy to use once cost hundreds of thousands of dollars; in the last five years computers have become fast enough and digital imaging inexpensive enough to make the technology affordable to all golfers.