Tips for purchasing a new putter
The first suggestion is knowing what type of putting stroke the golfers uses, whatever is natural. It can be straight back and straight through; it can have a small arc like Dave Stockton teaches or a much wider arc like Ben Crenshaw used.
Harris' next piece of advice certainly can't be measured by lasers. And it goes a little against the grain, but he has years of experience selling clubs. His second piece of advice for picking a putter is rather simple.
Choose something that looks good to the player. As Jerry Rice, possibly the greatest football player of all time, once said in a roundabout way, "You have to look good to play good."
Choose something that fits the eye, whether it's a blade, a mallet or something that looks like a spaceship prop in a 1980s movie. Look good, feel good, putt good.
The length, weight and balance point of a putter are up for personal preference. It makes sense for a taller player to like a longer putter, but that's not always the case. Phil Mickelson is 6-foot-3 and typically uses a 31-inch putter. That's on the short end of the putter spectrum.
(PGA.com)