JBO No.4 x 40TPI UNC Go Left Hand Thread Ring Gauge 2A UNC (Unified Coarse) - 504041 Premium German made UNC Left Hand Go Thread Ring Gauge. For checking to a 2A tolerance. GBP 149.99 1
JBO 5/16in x 18TPI UNC Go Left Hand Thread Ring Gauge 2A UNC (Unified Coarse) - 502418 Premium German made UNC Left Hand Go Thread Ring Gauge. For checking to a 2A tolerance. GBP 109.99 1
JBO 1 1/16in x 16TPI UN Go Thread Ring Gauge 2A UN (Unified) - 502576 Premium German made UN Right Hand Go Thread Ring Gauge. For checking to a 2A tolerance. GBP 499.99 1
JBO 1 9/16in x 18TPI UNEF Go Thread Ring Gauge 2A UNEF - 506769 Premium German made UNEF Right Hand Go Thread Ring Gauge. For checking to a 2A tolerance. GBP 359.99 1
JBO 7/8in x 1/2 1/2 1/2 1/29TPI UNC Go Thread Ring Gauge 2A UNC (Unified Coarse) - 502423 Premium German made UNC Right Hand Go Thread Ring Gauge. For checking to a 2A tolerance. GBP 129.99 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 139.99 1
JBO 9/16in x 18TPI UNF Go Thread Ring Gauge 3A UNF (Unified Fine) - 502482 Premium German made UNF Right Hand Go Thread Ring Gauge. For checking to a 3A tolerance. GBP 151.99 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 119.99 1
JBO 1 3/4in x 12TPI UN Go Thread Plug Gauge 2B UN (Unified) - 513514 Premium German made UN Right Hand Go Thread Plug Gauge. For checking to a 2B tolerance. GBP 269.99 1
JBO No.8 x 32TPI UNC Go Left Hand Thread Ring Gauge 2A UNC (Unified Coarse) - 506404 Premium German made UNC Left Hand Go Thread Ring Gauge. For checking to a 2A tolerance. GBP 109.99 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 149.99 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 7/8in x 1/2 1/2 1/2 1/29TPI UNC Go Left Hand Thread Ring Gauge 2A UNC (Unified Coarse) - 506408 Premium German made UNC Left Hand Go Thread Ring Gauge. For checking to a 2A tolerance. GBP 239.99 1
JBO No.2 x 64TPI UNF Go Left Hand Thread Ring Gauge 2A UNF (Unified Fine) - 506445 Premium German made UNF Left Hand Go Thread Ring Gauge. For checking to a 2A tolerance. GBP 193.99 1
JBO 9/16in x 24TPI UNEF Go Thread Ring Gauge 2A UNEF - 501334 Premium German made UNEF Right Hand Go Thread Ring Gauge. For checking to a 2A tolerance. GBP 139.99 1
JBO TR8 x 1.5mm Trapezoidal Go Thread Ring Gauge 7e Trapezoidal - 502538 Premium German made Trapezoidal Right Hand Go Thread Ring Gauge. For checking to a 7e tolerance. GBP 369.99 1
JBO 13/16in x 20TPI UNEF Go Thread Ring Gauge 2A UNEF - 501317 Premium German made UNEF Right Hand Go Thread Ring Gauge. For checking to a 2A tolerance. GBP 182.99 1
JBO 1 1/8in x 1/2 1/2 1/2 1/27TPI UNC Go Left Hand Thread Ring Gauge 2A UNC (Unified Coarse) - 506409 Premium German made UNC Left Hand Go Thread Ring Gauge. For checking to a 2A tolerance. GBP 309.99 1
JBO No.1 x 72TPI UNF Go Thread Ring Gauge 2A UNF (Unified Fine) - 502428 Premium German made UNF Right Hand Go Thread Ring Gauge. For checking to a 2A tolerance. GBP 149.99 1
JBO 7/16in x 14TPI UNC Go Thread Ring Gauge 3A UNC (Unified Coarse) - 502422 Premium German made UNC Right Hand Go Thread Ring Gauge. For checking to a 3A tolerance. GBP 139.99 1
JBO 13/16in x 20TPI UNEF Go Left Hand Thread Ring Gauge 2A UNEF - 506493 Premium German made UNEF Left Hand Go Thread Ring Gauge. For checking to a 2A tolerance. GBP 269.99 1
JBO 1 1/8in x 1/2 1/2 1/2 1/27TPI UNC Go Thread Ring Gauge 2A UNC (Unified Coarse) - 502401 Premium German made UNC Right Hand Go Thread Ring Gauge. For checking to a 2A tolerance. GBP 169.99 1
JBO 3/4in x 10TPI UNC Go Thread Ring Gauge 3A UNC (Unified Coarse) - 502797 Premium German made UNC Right Hand Go Thread Ring Gauge. For checking to a 3A tolerance. GBP 209.99 1
JBO 1 5/16in x 12TPI UN Go Thread Ring Gauge 2A UN (Unified) - 502563 Premium German made UN Right Hand Go Thread Ring Gauge. For checking to a 2A tolerance. GBP 509.99 1
JBO 3/4in x 16TPI UNF Go Thread Ring Gauge 3A UNF (Unified Fine) - 502463 Premium German made UNF Right Hand Go Thread Ring Gauge. For checking to a 3A tolerance. GBP 199.99 1