This magnetic base is an excellent portable device for mounting the measuring arm onto ferromagnetic material. Thanks to a low weight and easy activation, you will save a lot of time during reposition. Its high holding force up to 140 N/cm2 ensures the stability of the arm. The base is compact with the Brunson adapter. We sell it in 150 mm diameter and with an 89 mm x 8 UNC – 2A nut.