Three, technical parameters.
| host | 1 set | Standard hardness block | 2 pieces |
| Spare pressure needle | 1 stick | Correction wrench | 1 |
| charger | 1 | Rechargeable Battery | 1 |
| instrument case | 1 | manual | one serving |
| Model | Sample size/diameter mm | Net Weight Kg | Total weight Kg | Packaging size in mm | ||||
| SW-20 | plates with thickness ≤6, pipes with inner diameter ≥10 | 0.5 | 1.1 | 280×230×80 | ||||
| SW-20a | plates with thickness ≤13, pipes with inner diameter ≥10 | 0.5 | 1.1 | 280×230×80 | ||||
| SW-20b | plates with thickness ≤8, pipes with inner diameter ≥6 | 0.5 | 1.1 | 280×230×80 | ||||
Webster hardness tester optional accessories:








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