Patent ID: 8276435

Claim:
A surface texture measuring instrument, comprising: a measuring device that comprises a detector that detects surface texture of a workpiece; and a movement mechanism that guides the detector movably in a measurement direction; an elevation inclination adjuster that comprises a table on which either one of the workpiece and the measuring device is mounted, the elevation inclination adjuster being capable of adjusting an elevation position and an inclination angle of the table; a stage on which the other one of the workpiece and the measuring device is mounted; and a controller that controls the measuring device and the elevation inclination adjuster, wherein the elevation adjuster comprises: a base; a table having a placement surface, two points of action in a direction parallel to the placement surface and a fulcrum provided between the two points of action; a pair of moving units that support the points of action of the table and move the points of action in a direction in which the distance between the points of action and the base is increased or decreased; and, a fulcrum guide that supports the fulcrum between the pair of moving units and guides the table in a direction orthogonal to the placement surface; and, the controller comprises: a measurement controller that controls the movement mechanism to conduct a preliminary measurement and a main measurement of the workpiece; a computing unit that acquires a result of the preliminary measurement from the detector and obtains an inclination angle of the workpiece at which the workpiece is inclined to the measurement direction; and a positioning controller that controls the elevation inclination adjuster to adjust the elevation position of the table and adjust the inclination angle of the table based on the inclination angle obtained by the computing unit.