Mitutoyo Comparator Stand for Indicators This Mitutoyo Comparator Stand for Indicators has a stable, cast iron base which enables precise measurements. The partially serrated anvil prevents flat workpieces from wringing to it and the 2.3um flatness (or better) promotes accurate measurements. Features include... Bushing to hold 8mm stems Without bushing holds 3/8" stems Flat Anvil, 110mm Square 12.59" Tall Post 1.57" Diameter Post With Fine Adjustment Knob