| 摘要 |
<p>PROBLEM TO BE SOLVED: To inexpensively provide the subject measuring jig capable of simply measuring the relative position of four standard lines showing abnormal occlusion on an X-ray photograph. SOLUTION: Four measuring rods 2a, 2b, 2c, 2d are connected by four connection pieces 1a, 1b, 1c, 1d so as to be freely slidable in the axial direction of the measuring rods. Each of the connection pieces is constituted by connecting two revolving elements 3, 4 in a freely revolvable manner by a bolt 11 and a nut. The measuring jig thus constituted is placed on the X-ray photograph of the side surface of a patient's skull and the measuring rods are moved so as to respectively coincide with four standard lines and, if all of them coincide with the standard lines, they are traced on other paper while the coincidence state is held.</p> |
