A laser-based measurement system for accurately quantifying a golfer's stance and club position. The measurement system provides accurate linear and angular measurements. From data gathered by the measurement system, a golf club optimized for the golfer's natural stance may be modeled and evaluated. An adjustable club having adjustability in the fourth and fifth axes provided by spherical joints is provided to model a presumed optimal club. The golfer's performance using the modeled, optimized club may be evaluated. Finally, a fixture is provided for accurately customizing a golf club along all of the six axes.