Distance Measuring Devices - Rules Feature
Worth a read in relation to DMDs and also smartphones
http://www.golfshake.com/improve/view/4121/Distance_Measuring_Devices_DMDs_The_Facts.html
Worth a read in relation to DMDs and also smartphones
http://www.golfshake.com/improve/view/4121/Distance_Measuring_Devices_DMDs_The_Facts.html