Groove Gauges, Plastic, 17 sizes: 6 mm to 38 mm, METRIC-Pkg of 5 – Wire Rope Technical Board
Dyer 103 Series Direct Reading O-Ring/Groove Gage 2.0" to 2.8" Range - 103-106 - Penn Tool Co., Inc
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
MUELLER LABORATORY DEPTH-GROOVE GAUGE. IN NEAR MINT CONDITION. | eBay