Measurement instrument mounting: 6mm and 8mm holes, dove grooves Magnetic base only: TMH100A Arm (mm): 145 x 125 Adhesive force (N): 1000 Magnetic width (mm): 50 Magnetic depth (mm): 75 Magnetic height (mm): 55 Arm mounting screw: M8 x 1.25 测量仪器安装孔:6mm和8mm