Why brand recognition matters here more than usual
A father-in-law gift does a slightly awkward job: it should be clearly generous and well-chosen, but not so personal that it presumes a closeness you may not have yet. That's exactly the situation golf's recognizable classics are built for. A name he already respects — on a ball, a rangefinder or a glove — says "I put thought into this" without needing you to know his handicap.
The safe premium gift
Two things clear the bar reliably. A dozen tour-level balls— the ones he sees on television and rations — is the safest premium gift there is, as long as you buy the brand you've seen in his bag. And the default laser rangefinderis the classic big-ticket golf gift: significant, used every round, and from the brand most golfers would name first. Both are "can't really go wrong" provided you do the one check below.
The one check before the big gift
Rangefinders last years and nobody needs two. Before you buy one, look at the outside of his bag for a small rectangular pouch about the size of a chunky compact camera — that's a rangefinder case. If it's there, switch to a premium glove, a good dozen of balls, or one of the considered smaller gifts below. A duplicate at this price is an uncomfortable thing for a father-in-law to have to mention.
The considered smaller gift
If a big-ticket present is too much for the relationship, golf has genuinely nice things that aren't expensive. A golf-ball whiskey glass is a well-made novelty that ends up on a shelf rather than in a drawer. A leather scorecard holder is the closest thing to a personal gift in golf that needs no size. Golf sunglasses are practical and a quarter of the famous brand's price. Any of these reads as considered rather than obligatory.
What to steer clear of
Clubs and putters, which are fitted to the person. Shoes and apparel, unless you can verify a size — a father-in-law is the worst person to guess wrong for. And joke gifts: novelty socks are perfect for a coworker and a slightly odd note for an in-law you're trying to impress. If you know he's an older golfer specifically, the grandpa and senior golfer pages lean into comfort and ease.