... METRIC, UNC, UNF, BSP, BSW, BSPT , BA & ALSO GAUGES AS PER YR DRG & DIMNS.WE ARE ALSO MANUFACTURING HARDENED , GROUND AND ... 0.1 MM ONWARDS· SPECIAL GAUGES : CONCENTRICITY, SPECIAL GAUGES AS PER YR REQT. IIF ANY FURTHER DETAILS ARE REQUIRED KINDLY INFORM ... . Including of The Metric Plug and Ring Gauges, American Plug and Ring Gauges, PlainPlug and Ring Gauges, Petroleum Tubing Gauges, Trapeziform plug ...