A measurement setup to determine hitting parameters of a golf club includes a group of reflectors with at least two strip-shaped reflectors with retroreflective surfaces applied to the golf club shaft. The group of reflectors is attached to the club shaft with a detachable, yet tight clamp-connection....http://www.google.fr/patents/US8142301?utm_source=gb-gplus-shareBrevet US8142301 - Measuring device for measuring hitting parameters of a golf club and associated calibration device
Measuring device for measuring hitting parameters of a golf club and ...
