Golf Forum

How do Professional Golf caddies measure distances to the hole during a tournament round? I havent seen any caddy carry a golf gps or one of those radar assisted measuring devices to calculate the distances to a particular hole. All they seem to carry is a notepad.. So do they have electronic devices to assist them and we just dont see them use it on television coverage or do they follow some other method?? Or is it a combination of both?? Really interested in knowing this..Thanks guyz..