Glossary of Fitting Terms

In the quiet, precise world of golf club fitting, language is not decoration but instrument. Each term is a lever, a correlate to the arc of a swing, a hint of what a shaft might do under pressure, or how a grip will feel on a late-round gust. This glossary gathers the vocabulary that lets players, coaches, and fitters speak a shared dialect of measurement, intention, and outcome. Think of it as a compass for the amateur cartographer of his own game.

Core Concepts

Lie Angle

The angle between the sole of the club and the shaft when the club is resting upright. A lie that’s too upright or too flat alters the degree to which the face points at impact, subtly steering shots off their intended path.

Loft

The angle of the clubface relative to the ground at address. Loft governs launch trajectory and distance; small changes can translate into meaningful differences in carry and spin.

Hardware Elements

Shaft Flex

Describes the shaft’s resistance to bending. Flex interacts with swing speed to influence timing, release, and feel. A mismatch can create inconsistency in ball striking.

Shaft Weight

Heft that can affect tempo and balance. Lighter shafts often promote faster swing tempos; heavier ones can stabilize a deliberate swing but demand greater control from the athlete.

Grip Size

The circumference surrounding the handle. Grip size influences forearm mechanics, finger pressure, and ultimately the precision of the club’s feel in your hands.

Measurement & Fit References

Static Measurements

Lie, loft, and length taken when the club is at rest. These benchmarks establish baseline geometry for a fitting session.

Swing-Based Observations

Insights drawn from actual swings—tempo, path, impact position—often reveal discrepancies that static measurements alone cannot capture.

Dispersion

The spread of ball flights from a given set of conditions. Narrow dispersion signals alignment between the golfer’s mechanics and the equipment’s response.

Cross-References & Context

The terms herein are not isolated tokens; they link to practical guidance across the site. For deeper exploration, consult sections like Fitting Basics, Measuring Techniques, and the Visual Guides series to see how these concepts play out in diagrams and step-by-step methods.

Using this Glossary

Whether you’re preparing for a professional fitting or conducting a careful at-home evaluation, let this glossary be a steady reference. Build a personal glossary as you progress—mark terms, trace their connections, and let the language of fit become second nature as your swing evolves.