Magnetic-Base Indicator Holder Arm Type Articulating Base Height 1 13/32 in Base Length 1 27/64 in Base Size 1.417 in L x 1.181 in W x 1 2/5 in H Base Type Magnetic Base Width 1 3/16 in Compatible Indicator Mounts 3/8 in Fine Adjustment Position Fine Adjust Top (FAT) Holding Power 88 lbf Maximum Reach 7.559 in Step Type V Step Working Length of Post/Lower Arm 2.244 in Working Length of Snug/Third Arm 2.953 in Working Length of Upper Arm 1.85 in Construction Steel