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Are distance-measuring devices legal in golf?

Author

Emma Payne

Published Jan 12, 2026

Changes to the Rules of Golf, which came into effect in 2019, allowed players to use distance measuring devices under Rule 4.3a (1).

Are professional golfers allowed use range finders?

While professional golfers still cannot use rangefinders in most competitions, they do use them during practice. For best performance during competition, training should closely relate so the athletes get the best transfer from training.

Can you use a rangefinder on the green?

Are Rangefinders Legal in Golf? So, Yes you can use rangefinder devices for competition play. Devices like laser rangefinders, golf GPS watches, golf GPS devices, even smartphone apps.

Are rangefinders legal in Golf UK?

Garmin has announced that as of January 1, 2016, the full range of Garmin Approach distance measuring devices will be permitted for use in golfing competition, subject to local rule and usage code of practice set out by the recent announcement of changes to the R&A rule book.

Can I use GPS watch in Golf competitions?

Q. Can I use a distance-measuring device in a competition? A. The use of a distance-measuring device during a stipulated round remains contrary to the Rules of Golf under Rule 14-3 (Artificial Devices and Unusual Equipment; Abnormal Use of Equipment).

40 related questions found

Do pro golfers putt with a different ball?

Unless the one-ball Local Rule is in effect, the substituted ball could be any brand. On the putting green however, when you mark and lift your ball, you must replace that same ball to finish out the hole.

Are range finders legal?

The PGA of America, the tournament's organizing body, permitted rangefinders to be used for measuring distance only, even though many of these devices can measure elevation change as well with the flip of a switch.

How do PGA players know yardage?

The yardage book are ubiquitous on the PGA Tour. Players and caddies carry them in their pockets and consult them before each shot. They show yardages to various targets on each hole, different points of elevation, and a close-up of the green that shows detailed contours and yardages.

Are rangefinders worth it?

Laser Rangefinders are definitely worth the money if you are looking to improve you game. There are budget options for under $100 that will give you a reliable and accurate reading of distance and if you play regularly, you will get value for money from the rangefinder.

Are caddies allowed to use rangefinders?

Caddies will be allowed to use laser distance-measuring devices for the first time at a top-level tournament at this week's PGA Championship but one caddie said the introduction of the gadget will be “much ado about nothing”.

How much should I spend on a golf rangefinder?

Golfers used to spend upwards of $500 – $600 for a laser rangefinder. However, that is no longer the case. There are plenty of models in the $150 – $250 range that will perform very well for you on the golf course.

Will a rangefinder help my golf game?

Golf rangefinders, whether GPS or laser, are changing the way players interact with their environment and helps to improve game play while on the course, professionally or leisurely. You may use one, you may not – yet.

What yardage book do the pros use?

Mark Long Yardage Books | The most demanded yardage books on the amateur and professional golf tours. Yardage books the caddies and players use on the PGA TOUR as well as at the United States Open Championship, the PGA Championship and the Ryder Cup.

Why do pro golfers carry a notepad?

That would be an example where a competing golfer would look into his or her notebook and see that they have a note written that says missing long on the green is a bad miss, and so they will know to not hit a club that has a chance of going long.

Do all golf courses have yardage books?

Do all golf courses have yardage books? No, not every golf course has a yardage book, which is very unfortunate as they are super helpful for some golfers. But just because your local golf course doesn't offer yardage books in the pro shop, doesn't mean you can't get them. Instead, you just need to find them online.

How many balls can a golfer carry?

Under the Rules of Golf, a golfer can carry as many golf balls as they want in their bag. Really, they can carry as many golf balls as they're willing to carry around themselves or their caddie is willing to lug around for them. Most PGA Tour golfers carry in the area of nine golf balls in their bag per round.

What makes a golf ball Illegal?

Legal golf balls can't be smaller than 1.68 inches in diameter. The Polara balls have a diameter of 1.68 inches (the same size as normal). If you have a smaller ball, you'll have less drag and that should give you more distance. You'll also notice that illegal balls are slightly heavier.

What happens if a golfer runs out of balls?

So, what happens if you do run out of golf balls whilst out on the course? Well, under Rule 4.2: A player can “get a conforming ball to play from anyone else, including another player on the course”. It could be your playing partner, or perhaps someone you've never seen before.

Can I use my phone as a rangefinder?

Caddieye is the first rangefinder available, which works in conjunction with your smartphone and which is designed for sports. The device is attached to the phone's back cover, after which it is ready to be used. Rangefinder includes a separate battery, so it doesn't consume power from phone.

What is the difference between a hunting rangefinder and golf?

First off, a golf rangefinder uses nearest or first target priority mode. This is the internal function of the rangefinder to find the nearest object (usually a pin) by ignoring distant distractions such as trees, other golfers, and even animals. A hunting rangefinder uses distant target priority mode.

Are golf rangefinders accurate?

Laser Rangefinders are much more accurate, most will get you the correct measurement within a yard, some even claim to be accurate to 1/2 or even 1/10 of a yard. This can ease your mind when you are picking a club by knowing that the flag is actually 126 yards away and not 118 yards away.

Is a rangefinder with slope worth it?

The slope function on a rangefinder helps determine the exact yardage needed for a shot when accounting for the elevation difference from the fairway to the hole. Advanced golfers love having the slope function for shots inside 150 yards due to the precision of the readout.

How do golf distance finders work?

Using one of your eyes as you would when looking through any type of scope, a golf rangefinder magnifies the target and shoots a laser beam at it in order to determine the exact distance. The target in question that you would use a rangefinder to determine the distance to can be anything.

What is the purpose of a rangefinder?

range finder, any of several instruments used to measure the distance from the instrument to a selected point or object.