JBO 9/16in x 12TPI UNC Go Thread Ring Gauge 2A UNC (Unified Coarse) - 502425 Premium German made UNC Right Hand Go Thread Ring Gauge. For checking to a 2A tolerance. GBP 89.99 1
JBO No.10 x 24TPI UNC Go Thread Ring Gauge 2A UNC (Unified Coarse) - 502379 Premium German made UNC Right Hand Go Thread Ring Gauge. For checking to a 2A tolerance. GBP 65.99 1
JBO 5/8in x 24TPI UNEF Go Thread Ring Gauge 2A UNEF - 501327 Premium German made UNEF Right Hand Go Thread Ring Gauge. For checking to a 2A tolerance. GBP 153.99 1
JBO 1/2in x 13TPI UNC Go Left Hand Thread Ring Gauge 2A UNC (Unified Coarse) - 506406 Premium German made UNC Left Hand Go Thread Ring Gauge. For checking to a 2A tolerance. GBP 149.99 1
JBO No.6 x 40TPI UNF Go Thread Ring Gauge 2A UNF (Unified Fine) - 502444 Premium German made UNF Right Hand Go Thread Ring Gauge. For checking to a 2A tolerance. GBP 109.99 1
JBO 1in x 20TPI UNEF Go Thread Ring Gauge 2A UNEF - 501300 Premium German made UNEF Right Hand Go Thread Ring Gauge. For checking to a 2A tolerance. GBP 219.99 1
JBO 1in x 1/2 1/2 1/2 1/28TPI UNC Go Left Hand Thread Ring Gauge 2A UNC (Unified Coarse) - 504043 Premium German made UNC Left Hand Go Thread Ring Gauge. For checking to a 2A tolerance. GBP 269.99 1
JBO 5/16in x 18TPI UNJC Go Thread Ring Gauge 3A UNJC - 547028 Premium German made UNJC Right Hand Go Thread Ring Gauge. For checking to a 3A tolerance. GBP 159.99 1
JBO 3/8in x 24TPI UNF Go Left Hand Thread Ring Gauge 2A UNF (Unified Fine) - 502468 Premium German made UNF Left Hand Go Thread Ring Gauge. For checking to a 2A tolerance. GBP 122.99 1
JBO No.12 x 28TPI UNF Go Left Hand Thread Ring Gauge 2A UNF (Unified Fine) - 506455 Premium German made UNF Left Hand Go Thread Ring Gauge. For checking to a 2A tolerance. GBP 122.99 1
JBO 1in x 1/2 1/2 1/2 1/28TPI UNC Go Thread Ring Gauge 3A UNC (Unified Coarse) - 503166 Premium German made UNC Right Hand Go Thread Ring Gauge. For checking to a 3A tolerance. GBP 289.99 1
JBO 1 3/4in x 1/2 1/2 1/2 1/25TPI UNC Go Thread Plug Gauge 2B UNC (Unified Coarse) - 511328 Premium German made UNC Right Hand Go Thread Plug Gauge. For checking to a 2B tolerance. GBP 209.99 1
JBO TR30 x 6mm Trapezoidal Go Thread Ring Gauge 7e Trapezoidal - 502531 Premium German made Trapezoidal Right Hand Go Thread Ring Gauge. For checking to a 7e tolerance. GBP 519.99 1
JBO 5/16in x 24TPI UNF Go Thread Ring Gauge 3A UNF (Unified Fine) - 502470 Premium German made UNF Right Hand Go Thread Ring Gauge. For checking to a 3A tolerance. GBP 111.99 1
JBO TR22 x 5mm Trapezoidal Go Thread Ring Gauge 7e Trapezoidal - 502523 Premium German made Trapezoidal Right Hand Go Thread Ring Gauge. For checking to a 7e tolerance. GBP 449.99 1
JBO 1/2in x 20TPI UNF Go Thread Ring Gauge 3A UNF (Unified Fine) - 502456 Premium German made UNF Right Hand Go Thread Ring Gauge. For checking to a 3A tolerance. GBP 149.99 1
JBO 1 1/4in x 12TPI UNF Go Thread Ring Gauge 2A UNF (Unified Fine) - 502452 Premium German made UNF Right Hand Go Thread Ring Gauge. For checking to a 2A tolerance. GBP 229.99 1
JBO 1 1/8in x 8TPI UN Go Thread Ring Gauge 2A UN (Unified) - 503417 Premium German made UN Right Hand Go Thread Ring Gauge. For checking to a 2A tolerance. GBP 529.99 1
JBO 1/2in x 20 UNJF Go Thread Ring Gauge 3B UNJF - 502986 Premium German Made UNJF Right Hand Go Thread Ring Gauge. For checking to a 3B tolerance GBP 189.99 1
JBO 3/8in x 24 UNJF Go Thread Ring Gauge 3B UNJF - 501421 Premium German Made UNJF Right Hand Go Thread Ring Gauge. For checking to a 3B tolerance GBP 159.99 1
JBO No.0 x 80TPI UNF Go Thread Ring Gauge 3A UNF (Unified Fine) - 502427 Premium German made UNF Right Hand Go Thread Ring Gauge. For checking to a 3A tolerance. GBP 249.99 1
JBO 1/2in x 20TPI UNF Go Left Hand Thread Ring Gauge 2A UNF (Unified Fine) - 502457 Premium German made UNF Left Hand Go Thread Ring Gauge. For checking to a 2A tolerance. GBP 149.99 1
JBO No.8 x 36TPI UNF Go Thread Ring Gauge 3A UNF (Unified Fine) - 502447 Premium German made UNF Right Hand Go Thread Ring Gauge. For checking to a 3A tolerance. GBP 123.99 1
JBO 2in x 12TPI UN Go Thread Ring Gauge 2A UN (Unified) - 502584 Premium German made UN Right Hand Go Thread Ring Gauge. For checking to a 2A tolerance. GBP 719.99 1
JBO 7/8in x 14TPI UNF Go Left Hand Thread Ring Gauge 2A UNF (Unified Fine) - 502480 Premium German made UNF Left Hand Go Thread Ring Gauge. For checking to a 2A tolerance. GBP 239.99 1