Threaded Plug Gauge Assembly Dimension Type Inch Gauge Type Go/No-Go (Plus/Minus) Handle Design Double End Included Handle Taperlock 0 Thread Class 2B Thread Size #12-24 Thread Type UNC Tolerance Class X Gauge Finish Chrome Plated Gauge Length - Go Member 13/32 in Gauge Length - No-Go Member 9/32 in Gauge Material Tool Steel Handle Color Blue Handle Length 2 in Hardness RC 70-72 Included Certification Certificate of Accuracy with NIST Traceability