Main column: φ20 x 355mm Support: φ14 x 200mm Measuring instrument installation: 6.6mm, 8.1mm hole, with ear Adhesive force (N): 1300 Magnetic width (mm): 50 Magnetic depth (mm): 117 Magnetic height (mm): 55 Main column mounting screw: M10 x P1.25(顶螺钉)/M20 X P1.5(底螺丝)