FlagD distances are measured by determining GPS coordinates of the targets on the range (pins/flags) and providing that information back to each individual FlagD unit. The GPS coordinates are taken ONCE and programmed into each device upon initial setup.
The individual devices are “reset” each day by simply pressing the button on the back of the unit with a golf tee. This insures that the distances are calculated from the exact spot that the FlagD device is located each day. Each device will display unique distances depending on it’s location on the range.