PT, NPT, NPTF Taper , Screw Plug & Ring Gauges .
Plug & Ring Gauge Malaysia Thread Plug & Ring Selangor Limit Taper Snap Width Gauge Malaysia Plug & Ring Gauge Johor Plug & Ring Gauge Penang
Gauges for Taper Pipe Threads : PT , NPT , NPTF
Taper Gauges : MT , NT , JT .