It isn’t just professional golfers who know how important a good caddy is to their game. Having someone on hand to give accurate information on distances and hazards is a necessity for the best, and often just a dream for the rest.
Basic Function
The Global Positioning System (gps) is a worldwide system formed from 24 satellites, developed by the US Defence Department in the 1970s. A golf gps device uses simultaneous signals from a number of these satellites to pinpoint its position.
Basic Function
Golf laser rangefinders emit pulses of infra-red laser light directed at a target. The reflected pulses are captured by a receiving lens. By measuring the transmission-reception time of these pulses, the rangefinder computes the target distance.