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 6 mm Fine Adjustment Position Fine Adjust Top (FAT) Holding Power 800 N Maximum Reach 282 mm Step Type V Step Working Length of Post/Lower Arm 110 mm Working Length of Snug/Third Arm 71 mm Working Length of Upper Arm 101 mm Base Thread Size M8 x 1