Groove Diameter Dog Bone/Paddle Gages (GO/NO GO gage) - API 6A Seal Ring Groove Gage - BX and R-RX - Gagemaker Thread Measuring Instruments - Measuring Instruments
API 6A Seal Ring Groove Gages (BX/RX)
Digital Ball Vernier, For Ring Groove Dimensions Measure
Groove Width Profiles (GO/NO GO gage) - API 6A Seal Ring Groove Gage - BX and R-RX - Gagemaker Thread Measuring Instruments - Measuring Instruments
Groove/"O" Ring Groove Measurement — Flexbar Machine Corporation
API Ring Groove Checker
Deep groove ball bearings | SKF
Gagemaker - Ball mic gage includes customer specified ball contact points (no indicator)