Blacksmiths Illustrated manual part 7 · BELL CRANK LEVER PLATE 56: FIG. 1 illustrates a bell crank...
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Blacksmiths Illustrated manual part 7 · BELL CRANK LEVER PLATE 56: FIG. 1 illustrates a bell crank lever, made from a 2-inch square bar. First operation, FIG. 2 : Bend the 2-inch