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 7/16in x 28TPI UNEF Go Thread Ring Gauge 2A UNEF - 501329 Premium German made UNEF Right Hand Go Thread Ring Gauge. For checking to a 2A tolerance. GBP 119.99 1
JBO 7/16in x 20TPI UNF Go Thread Ring Gauge 2A UNF (Unified Fine) - 502475 Premium German made UNF Right Hand Go Thread Ring Gauge. For checking to a 2A tolerance. GBP 72.99 1
JBO 7/16in x 28TPI UNEF Go Left Hand Thread Ring Gauge 2A UNEF - 501332 Premium German made UNEF Left Hand Go Thread Ring Gauge. For checking to a 2A tolerance. GBP 179.99 1
JBO 7/16in x 14TPI UNC Go Thread Ring Gauge 2A UNC (Unified Coarse) - 502421 Premium German made UNC Right Hand Go Thread Ring Gauge. For checking to a 2A tolerance. GBP 69.99 1
JBO 7/16in x 14TPI UNC No-Go Left Hand Thread Ring Gauge 2A UNC (Unified Coarse) - 506417 Premium German made UNC Left Hand No-Go Thread Ring Gauge. For checking to a 2A tolerance. GBP 129.99 1
JBO 7/16in x 28TPI UNEF No-Go Left Hand Thread Ring Gauge 2A UNEF - 500038 Premium German made UNEF Left Hand No-Go Thread Ring Gauge. For checking to a 2A tolerance. GBP 179.99 1
JBO 7/16in x 20TPI UNF No-Go Left Hand Thread Ring Gauge 2A UNF (Unified Fine) - 501148 Premium German made UNF Left Hand No-Go Thread Ring Gauge. For checking to a 2A tolerance. GBP 129.99 1
JBO 7/16in x 14TPI UNC No-Go Thread Ring Gauge 3A UNC (Unified Coarse) - 501094 Premium German made UNC Right Hand No-Go Thread Ring Gauge. For checking to a 3A tolerance. GBP 139.99 1
JBO 7/16in x 14TPI UNJC No-Go Thread Ring Gauge 3A UNJC - 554997 Premium German made UNJC Right Hand No-Go Thread Ring Gauge. For checking to a 3A tolerance. GBP 209.99 1
JBO 7/16in x 20TPI UNF No-Go Thread Ring Gauge 3A UNF (Unified Fine) - 501147 Premium German made UNF Right Hand No-Go Thread Ring Gauge. For checking to a 3A tolerance. GBP 129.99 1
JBO 7/16in x 28TPI UNEF No-Go Thread Ring Gauge 2A UNEF - 500036 Premium German made UNEF Right Hand No-Go Thread Ring Gauge. For checking to a 2A tolerance. GBP 119.99 1
JBO 7/16in x 20TPI UNF Go/No-Go Left Hand Thread Plug Gauge 2B UNF (Unified Fine) - 514344 Premium German made UNF Left Hand Go/No-Go Thread Plug Gauge. For checking to a 2B tolerance. GBP 133.99 1
JBO 7/16in x 14TPI UNC Go/No-Go Thread Plug Gauge 3B UNC (Unified Coarse) - 512416 Premium German made UNC Right Hand Go/No-Go Thread Plug Gauge. For checking to a 3B tolerance. GBP 123.99 1
JBO 7/16in x 20TPI UNF Go/No-Go Thread Plug Gauge 2B UNF (Unified Fine) - 512472 Premium German made UNF Right Hand Go/No-Go Thread Plug Gauge. For checking to a 2B tolerance. GBP 94.99 1
JBO 7/16in x 14TPI UNC Go/No-Go Left Hand Thread Plug Gauge 2B UNC (Unified Coarse) - 517330 Premium German made UNC Left Hand Go/No-Go Thread Plug Gauge. For checking to a 2B tolerance. GBP 139.99 1
JBO 7/16in x 28TPI UNEF Go/No-Go Left Hand Thread Plug Gauge 2B UNEF - 514710 Premium German made UNEF Left Hand Go/No-Go Thread Plug Gauge. For checking to a 2B tolerance. GBP 159.99 1
JBO 7/16in x 20TPI Sti UNF Go/No-Go Thread Plug Gauge 2B Sti UNF (Unified Fine) - 513343 Premium German made STI UNF Right Hand Go/No-Go Thread Plug Gauge. For checking to a 2B tolerance. GBP 259.99 1