Abstract: A measuring and indicating device for a snow skier including a rotatable roller attachable to the rear of a ski and adapted to rotate in rolling contact with the underlying snow utilizes an indicator unit positionable remote of the roller such as upon the wrist of the skier. The device further includes elements supported adjacent the roller for sensing the rotation thereof and generating signals corresponding to the sensed rotation. The indicator unit includes a calculator for receiving the signals generated by the sensing elements and calculating a predetermined characteristic, such as speed or distance, of travel by the snow skier corresponding to the received signals. The indicator unit further includes a display for displaying the calculated characteristic in the form of a numerical value.