Golf stance training device

Apparatus for training a golfer to adopt a ball address stance in which the golfer grips a selected golf club, essentially grounds the clubhead behind a ball which the golfer will strike with the club and positions himself relative to the ball in a stance in which the lowest part of the golfer's hands on the club grip is essentially on a sight line of the golfer to a line across the front ends of his feet, the apparatus comprising

• a substantially straight, substantially planar foot alignment member having at least one essentially straight side edge extending therealong between opposite ends of that member,
• a substantially straight, substantially planar ball index member having a golfer end and an opposite ball end,
• a ball pointer coupled to the index member adjacent the ball end of that member for rotation about an axis substantially normal to the plane of that member between an extended position in which the pointer extends away from that member in substantial alignment therewith to a tip end spaced from that member and a retracted position of the pointer relative to that member in which the pointer is disposed in overlying alignment relative to that member with its tip end disposed between the golfer and ball ends of that member, and
• a resiliently biased, selectively releasable clamp mechanism cooperating between the foot alignment and ball index members, the clamping mechanism being associated with the alignment member substantially at the midlength thereof, the clamp mechanism affording rotation of the members relative to each about an axis normal to the plane of each member between a) a storage relation of the members in which they are substantially aligned one atop the other and b) a usage relation in which the members are disposed at right angles to each other with the straight edge of the alignment member disposed toward the golfer end of the index member and in which bottom surfaces of the members are substantially coplanar, the mechanism being operable for clamping the members together in both relations of the members and being selectively operable for releasing the members from clamping relation and for movement of the alignment member, when in its usage relation to the index member and when the pointer is in its extended position, relatively along the index member to adjust the position of the alignment member along the index member to establish a distance between said straight edge and the pointer tip end which corresponds to the correct foot-to-ball distance for the golfer when the golfer adopts the described stance relative to the ball with the selected club.