Magnetic-Base Indicator Holder Arm Type Articulating Base Height 1 31/32 in Base Length 1 13/32 in Base Size 1 13/32 in L x 1 13/64 in W x 1 31/32 in H Base Type Magnetic Base Width 1 13/64 in Compatible Indicator Mounts 6 mm Fine Adjustment Position Fine Adjust Top (FAT) Fine Adjust Bottom (FAB) Holding Power 300 N Maximum Reach 179 mm Step Type V Step Working Length of Post/Lower Arm 45 mm Working Length of Snug/Third Arm 45 mm Working Length of Upper Arm 61.7 mm