Club length is measured from the bottom of the club head to the end of the grip.
Club path is the direction the club head is traveling relative to the target line at impact — right of the line is a positive path, left of the line is negative (reversed for left-handed golfers).
Compression measures how much a golf ball deforms on impact.
Custom-built means every component — drawn from a matrix of 65,000+ combinations — is selected specifically for you and assembled to your fitting specifications, rather than picked off a shelf.
Dispersion is the pattern of variation across multiple shots hit with the same club, combining both distance and direction into a visual shape (like a circle or oval) that shows shot consistency.
Dynamic loft is the actual loft of the clubface at the moment of impact, as opposed to the club's listed static loft.
Face angle is the clubface's orientation relative to the target line at impact — toe-closer-to-target is negative, heel-closer-to-target is positive (reversed for left-handed golfers).
A face-balanced putter stays square to the horizontal plane when the shaft is balanced, and typically suits golfers with a straight-back, straight-through putting stroke.