Yes. The major amendments to the rules of golf introduced in 2019 allow for the use of distance measuring devices, but be careful. There are a few exceptions. For example, some rangefinders offer a slope reading, so if you’re facing an uphill shot, for example, it may tell you that the actual distance is 120-yards, but the slope reading may say ‘plays like’ 130-yards. This is not allowed in competition. To be on the safe side, just use it for distance measurements if you’re in competition.