In a nutshell, compression is the measure of how soft a ball is (80 being softest and 100 hardest). And Sphericity is the roundness of the ball.
But why is this important?
Today, with newer manufacturing techniques and space age materials, golf balls are made many different ways by a great many more companies than ever before.
These companies manufacture their balls to the USGA’s standards which govern weight, size, spherical symmetry (or roundness), initial velocity, and overall distance.
In each of these areas, there are specific standards that are to be met, and all balls are manufactured to these same standards.
However, since the 1940s each ball manufacturer has determined their own compression standards. Golf ball compression is the measure of how much a golf ball deforms during club impact. No specifications for this important aspect of the ball are given by the USGA!
This means that each ball, by each manufacturer is held to a different standard. So one brand of ball that is a 100, can be the same as a ball that is an 80 or 90 of another brand!
Players looking for consistency in their game need to know which compression they are using, and whether or not their balls are truly round. The Majestix Golf Ball Compression and Sphericity Tester is the one and only hand held way of getting accurate, consistent, results.
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