Abstract: A method and apparatus are described for determining the amount of canting necessary to correct the ski boot-ski interface to compensate for inherent misalignment between a skier's lower leg and the bottom of the sole of his or her boots. The skier's foot is secured in the boot, and the boot is secured on a platform freely rotatable about a longitudinal centerline axis. A rod also freely rotatable about the same axis is centered with respect to the knee by a knee clamp attached to the rod. A pointer affixed to the rod is used to accurately determine the angle between the rod and platform on a scale extending from the boot platform. This angle is then used to guide the placement of shims or the employment of other means to effect the desired orientation of the knee, and consequently the lower leg, relative to the ski, for optimum control.