The Quarterer II NorthWest Short LineQuartering is the term for setting crankpins of locomotive drivers at 90 degrees crank apart (similar to an automobile crankshaft). Accurate quarter of all drivers in a set to the same angle (whether exactly 90 degrees or not) is critical for smooth operation of model locomotives. This tool enables quick, accurate quartering of HO, Sn3, S, and On3 drivers up to 1 1 2" (39mm) diameter (120" in HO scale, 90" in S scale, 65" in O scale). Minimum crank
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