Control tools used at the beginning of the official championship to validate the use of balls during the match.
The gauge checks that the circumference of the ball is 270mm ±8mm.
The test is successful when the ball passes through the large hole in the measuring plate but not through the small hole.
The ramp ensures that the density of the ball is hard enough to compete.
The test is successful when the ball descends along the slope and falls from the plate in a straight line.
The scale checks that the weight of the ball is 275g ±12g.
The test is successful when the weight of the ball is in the interval.