Fig. 1From: Chair side measuring instrument for quantification of the extent of a transverse maxillary occlusal plane cantThe measuring instrument is constructed by soldering the edge of a double-sided stainless steel dental ruler at 90° to the flat surface of a similar ruler. A double-sided ruler permits its use on the patient’s right and left sides as required. A right-angle gauge may be used to ensure a 90° angleBack to article page