Same as the original competition curling stone dial measure, this model has a distinct feature that allows the indicator to measure approximately 13 mm (1/2 inch) up to the tee center. A low resistant round stainless steel ball with bearing gives an ACCURATE reading of the distance of the rocks regardless of angle of contact to the stone. Large easy to read dial on repairable indicator head and a single main tube made from heavy gauge steel allows for easy sliding of the dial indicator head, no locking up and stops deflection or bending to give fair and accurate measurements. This model features a slide end for use in clubs with dividers between the sheets and feet made of non-freezing glide material on the end support.