Fowler 1/4" Parallel Set
Made from high-grade alloy steel, hardened and ground from 1/4" stock with 2 holes in each parallel3/4", 7/8", 1", 1-1/8", 1-1/4", 1-3/8", 1-1/2", 1-5/8", & 1-3/4" heightsHeight specifications relate to consistency within each pair. Absolute heights are nominalParallelism and paired height: ± 0.0002"Hardness 52-58 HRC, 6" length and 1/4" thickness