Magnetic-Base Indicator Holder Arm Type Articulating Base Height 2 5/32 in Base Length 2 23/64 in Base Size 2 23/64 in L x 1 31/32 in W x 2 5/32 in H Base Type Magnetic Base Width 1 31/32 in Compatible Indicator Mounts 3/8 in Fine Adjustment Position Fine Adjust Base (FAB) Holding Power 800 N Maximum Reach 267.5 mm Step Type V Step Working Length of Post/Lower Arm 133 mm Working Length of Snug/Third Arm 21.5 mm Working Length of Upper Arm 113 mm Base Thread Size M8 x 1