| 摘要 |
<p>The device (100) has a housing (10) comprising a quadratic, rectangular, circular or polygonal section, and a circular side wall (13) connecting a base plate with a covering plate (12). Wire-shaped measuring pins (20) having different diameters are arranged in an inner side of the housing. Hand- or motor-operated sliders (30) are individually arranged outside the housing, and are movable in a longitudinal direction of the measuring pins, such that the measuring pins with a section project from the side wall in an extended condition.</p> |
