Main column: φ14 x 178mm Support: φ12 x 165mm Measurement instrument mounting: 6.6mm, 8.1mm hole, with ear Main column diameter, precision measurement direction type Adhesive force (N): 800 Magnetic width (mm): 50 Magnetic depth (mm): 58.5 Magnetic height (mm):55 主柱安装螺钉:M8 x P1.25