Measuring instrument mounting: 6mm and 8mm holes (with 6mm adapter), 6.5mm dove groove Free-sized medium size with mechanical fine movement adjustment Adhesive force (N): 392 Magnetic width (mm): 50 Magnetic depth (mm): 40 Magnetic height (mm): 55 Main column length (mm): 73 主柱安装螺钉:M8 x 1.25 测量仪器安装孔:φ8