[Jeff]

Tb0627

I realize that the true arc of clubhead movement is on the inclined plane and that the arc of approach is the visual equivalent as seen on the ground - by the golfer when viewed from above. However, that "visual equivalent image" on the ground is surely not in the same place on the ground as the laser light track if the laser light is shone at right angles to the inclined plane, rather than shone through the glass pane at a steeper angle (as from the golfer's eye position)?

Jeff.