We can supply:

     1. Metric thread plug gauge & ring gauge from M1 to M100, accuracy 6H, 5H, 6G; 6g, 6h, etc
     2. US specification thread plug gauge& ring gauge (suitable for US standard) from No.0 - 80UNF, accuracy 2B, 3B, 2A, 3A (UNC, UNF, UNE, UN, UNS, etc) and taper pipe thread series NPT, NPTF, NPSM, ACME, STUB ACME, BUTT, etc
     3.UK thread plug gauge & ring gauge (suitable for European countries standard) from size 1/8 - 40 BSW, BSF, and taper pipe thread series with G, RC/R, PT, BA, etc
    4.For thread insert hole check, ST thread plug gauge, and TS ZS thread ring gauge
    5.For threaded hole positioning and measuring thread hole center distance Thread positioning gauge (thread vertical gauge, thread gauge)
    6.Oil Pipe Series Gauge API series
    7.Other series thread gauges: Pg, V1, V2, SM