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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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UZUD Hegman Gauge Grinding Gauge High Precision fineness Meter Single Groove 0-100 μm: Amazon.com: Industrial & Scientific
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Face Groove and Hole Locations Gages (BX-BXG Series) - Face Groove and Hole Locations - API 6A Seal Ring Groove Gage - BX and R-RX - Gagemaker Thread Measuring Instruments - Measuring Instruments
Dyer "Classic" Direct Reading ID Groove Gage, with Range Range: 0.2 - 0.6" - 104-102 - Light Tool Supply
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