Meet the RoughCard Real Distance Calculator (patent pending 2007903719 / 2008900865): an innovative golf tool that takes the guess work out of choosing the right club, everywhere and every time.

All you need to make it work is the course map that's usually provided on the back of your score card.

Once it's set to the golf course, it will give you instant real distance information for the rest of the round, allowing you to concentrate on your swing and... keep your cool.