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Internal Diameter-Groove Gages - Internal Diameter-Grooves - Pin Seal Diameter Gages - Gagemaker Thread Measuring Instruments - Measuring Instruments
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Starrett - 3/8 to 6 Inch Measurement Steel, Dial Indicator Groove Gage - 86426418 - MSC Industrial Supply
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Mueller Gage – model 1915 – 1.030 – 7.125"/.0005" Groove Diameter Gage – OV76 – Bullseye Calibration
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