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Mitutoyo 177-297 Setting Ring, 4" Size, 0.98" Width, 6.3" Outside Diameter, +/-0.00008" Accuracy: Calibration Setting Rings: Amazon.com: Industrial & Scientific
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Mitutoyo 177-180, Setting Ring, .500" ID: Calibration Setting Rings: Amazon.com: Industrial & Scientific
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Mitutoyo 177-178 Setting Ring, 45mm Size, 15mm Width, 85mm Outside Diameter, +/-1.5Micrometer Accuracy: Calibration Setting Rings: Amazon.com: Industrial & Scientific
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