Porter Gill Scale Ring (3D Printed)

The Porter Gill Scale Ring (3D Printed) is a precision calibration ring used to verify that throwing implements, such as shot puts and discuses, meet the diameter specifications required for competition. 3D-printing technology delivers exact dimensional accuracy, so the gauge produces consistent, reliable readings every time. Implement certification is a required step before sanctioned competition, and having the right gauge on hand makes the process straightforward for coaches and meet officials.

Key features & specs:

• Precision calibration ring for implement diameter checks
• Verifies shot put and discus diameter compliance
• 3D-printed for exact dimensional accuracy
• Consistent, repeatable measurements
• Affordable in-house certification tool

Coach's tip: Keep the ring with your certification kit so implements can be checked on-site before every meet, avoiding disqualifications. Handle and store it carefully to protect the printed edges that determine its accuracy, and recheck it against a known-good implement periodically. Because it is inexpensive, keeping one in every throws bag means an implement check is never more than a step away.