Gaugestools is a leading supplier and manufacturer of thread gauges. Our goal is to provide our clients with the highest quality plug & ring gages and taps & dies. We will be sure our delivery is on time. We are a professional manufacturer and supplier of thread ring gauges and thread plug gauges, including GO / NOGO , RH/LH( right hand and left hand). We have rich ranges of thread gauges, which include UN (UN,UNC,UNF,UNS,UNEF), Metric, ACME, BSPP (G), BSPT(R), NPT, NPTF, Trapezoidal, MJ, UNJ, UNJC, UNJF, UNJEF, UNJS, etc. We not only have thread gauges, but also have plain gauges.