||The bowling ball used in this example has been used for several games and displays a visable track around the entire bowling ball. |
|Using a wax pencil, you can trace the track line around the ball. If your ball does not have any track markings, then you can throw a shot and trace the track line closest to the fingers and thumb hole.
||With your track traced completely around the ball, you can measure your track diameter. The ball in the example shows a 11 3/4 inch track diameter. |