ZC29型阶段电阻测试仪用于测量各种电力系统、电气设备、避雷针等接地装置的电阻值，及测量低电阻导体的电阻及土壤电阻率。
该设备由手摇发电机、电流互感器、滑线电阻及检流计组成。机构装在塑料壳内，外有皮壳便于携带。附件有辅助探棒、导线等，装于附件袋内。
Model 29B Earth-Ristance Ohmmeter is used to measure the ristance of low conduor and ground ristance of power systtem,eleical instruments,lightening-proteion e.
| TEM | DCRIPTIONS | QTY/N | MA(CM) | NW(KG) | GW(KG) |
| 1 | MEGGER MODEL 5050T | 8 | 48*31*36 | 14 | 16 |
| 2 | MEGGER MODEL 1010T | 8 | 48*31*36 | 14 | 16 |
| 3 | MEGGER MODEL ZC-70 | 6 | 53.5*30.5*33 | 11 | 13 |
| 4 | EARTH-RISTANCE OHMMETER MODEL 29B-1 | 4 | 54*40*26 | 18 | 20 |
| 5 | EARTH-RISTANCE OHMMETER MODEL 29B-2 | 4 | 54*40*26 | 18 | 20 |
