Golf-Distance-measuring devices 'much ado about nothing'

FILE PHOTO: Jun 16, 2019; Pebble Beach, CA, USA; Zach Johnson (right) and caddie Brett Waldman (left) look at the yardage book on the 16th green during the final round of the 2019 U.S. Open golf tournament at Pebble Beach Golf Links. / Orlando Ramirez-USA TODAY Sports/File Photo

KIAWAH ISLAND, South Carolina (Reuters) - 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".

The devices, known as rangefinders, have been around for 25 years and are generally allowed in amateur tournaments.