ASTM F1888-09(2014)

5.1 The static compression-displacement of a baseball or softball is a mechanical property which can correlate to dynamic properties.

5.2 This test method is suitable for obtaining data in research and development, quality control, and classifying balls by the compression-displacement.

5.3 Sports associations can use compression-displacement standards in specifications for official baseballs and softballs standards in specifications for official baseballs and softballs for purposes of consistency of performance.

5.4 This same test procedure can be utilized with other compressive forces and the specified force is not necessarily the same as experienced in actual use.

1.1 This test method describes a comparative measurement method for baseballs and softballs as defined by a static compression displacement test.

1.2 This test method is based on a slow rate force-displacement measurement.

1.3 This procedure is for baseballs and softballs meeting standards established by the sports' governing bodies.