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* Steel sets are produced from a special material featuring high carbon and chrome content* Stress relieved and heat treated to 65 RC; extremely wear-resistant* Mirror-polished surface finish provides exceptional wringing characteristics* Individual serial numbers on each block, regardless of grade* Manufactured a temperature-controlled environment to provide precise and reliable accuracy* The accuracies of all blocks meet or exceed standard of the GGG-G-15C (inck block) and ISO (metric block), Also made in accordance with DIN861.
* With certificate.
| Model No. | No. of Block | Blocks Included | Grade | |
| Steel | Carbide | |||
| Inch | ||||
| GB-812 | GBC-812 | 81 Pc Set | 9 blocks.1001"-.1009" steps of .0001" 49 blocks.101"-.149" steps of .001" 19 blocks .050"-.950" steps of .050" 4 blocks 1"-4" steps of 1" | 2 |
| GB-813 | GBC-813 | 3 | ||
| GB-81B | GBC-81B | B | ||
| Metric | ||||
| GBM-760 | GBCM-760 | 76 Pc Set | 1 block 1.0005mm 49 blocks 1.01-1.49 in 0.01mm steps 19 blocks 0.5-9.5mm in 0.05mm steps 5 blocks 10,20,30,40,50mm 2 blocks 25,100mm | 0 |
| GMB-761 | GBCM-761 | 1 | ||
| GBM-762 | GBCM-762 | 2 | ||
| GBM-830 | GBCM-830 | 83 Pc Set | 1 block 1.0005mm 49 blocks 1.01-1.49 in 0.01mm steps 19 blocks 0.5-9.5mm in 0.05mm steps 4 blocks 1.6-1.9 in 0.1mm steps 10 blocks 10-100 in 10mm steps | 0 |
| GBM-831 | GBCM-831 | 1 | ||
| GBM-832 | GBCM-832 | 2 | ||
| GBM-870 | GBCM-870 | 87 Pc Set | 9 blocks 1.001-1.009 in 0.001mm steps 49 blocks 1.01-1.49 in 0.01mm steps 19 blocks 0.5-9.5 in 0.5mm steps 10 blocks 10-100 in 10mm steps | 0 |
| GBM-871 | GBCM-871 | 1 | ||
| GBM-872 | GBCM-872 | 2 | ||
| GBM-1120 | GBCM-1120 | 112 Pc Set | 1 blocks 1.005mm 9 blocks 1.001-1.009 in 0.001mm steps 49 blocks 1.01-1.49 in 0.01mm steps 49 blocks 0.5-24.5 in 0.5mm steps 4 blocks 25-100 in 25mm steps | 0 |
| GBM-1121 | GBCM-1121 | 1 | ||
| GBM-1122 | GBCM-1122 | 2 | ||