| Code | Resolution | Load control | Max. workpiece height | Max. testing width | Hardness scale |
|---|---|---|---|---|---|
| HDT-RT151 | 0.1HR | automatic (load/dwell/unload) | 230mm | 170mm | HRA, HRB, HRC, HRD, HRF, HRG |
| HDT-RT152 | 0.1HR | automatic (load/dwell/unload) | 230mm | 170mm | HR15N, HR30N, HR45N, HR15T, HR30T, HR45T |
| HDT-RT153 | 0.1HR | automatic (load/dwell/unload) | 230mm | 170mm | HRA, HRB, HRC, HRD, HRF, HRG, HR15N, HR30N, HR45N, HR15T, HR30T, HR45T |




