Dial Indicators, Micrometers, Calipers manufacturer / supplier in China, offering Customized 1′′-11 1/2 NPT Taper Pipe Thread Plug Gauge (ANSI) Hole Diameter Measuring Tools, 1″ -11 1/2 NPT Taper Pipe Thread Plug Gauge for Pipe Fitting Inspection, High Precision M72X2.00-6g Thread Ring Gauge for Metric Threads and so on.