Kent-Moore 29198-3 Center & Front Seal Ring Groove Gauge 1E-1733-C3 | eBay
Dyer 103 Series Direct Reading O-Ring/Groove Gage 0.8" to 1.6" Range - 103-103 - Penn Tool Co., Inc
SPI - Inside Dial Caliper Gage: 95 to 120 mm, 0.025 mm Graduation, 0.038 mm Accuracy - 65378366 - MSC Industrial Supply
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
Ring Grooves | Gagemaker
Groove/"O" Ring Groove Measurement — Flexbar Machine Corporation
Ring Groove Paddle Gauges — Rejent Tool and Manufacturing ltd.
Rtj Ring Groove Digital Calipers with 23 Degree Conical Points-Newly Designed - China Rtj Ring Groove Vernier Caliper, Ring Joint Caliper | Made-in-China.com
Gagemaker - BXG-1000 Face Groove Width Gage per API 6A | Deterco
Dial Waterproof Api Ring Groove vernier Caliper
1175Z Dial Indicator Groove Gage
Gagemaker DBBX-303, Dog Bone/Paddle Gage for BX-303 groove | GENERAL TECH SHOP