Threaded Ring Gage Long Form Calibration Certificate Yes Material Tool Steel Dimension Type Inch Gauge Type Go (Minus) No-Go (Plus) Pitch Diameter 0.6552 in (No-Go) 0.6592 in (Go) Pitch Diameter - Go Member 0.6592 in Pitch Diameter - No-Go Member 0.6552 in Thread Class 2A Thread Length 9/16 in Thread Size 11/16 In.-24 Thread Type UNEF Finish Chrome Plated Gauge Design Adjustable Hardness RC 60/62 Included Certification Certificate of Accuracy Standards ASME B47.1 ISO 17025