ZC29型階段電阻測試儀用于測量各種電力系統、電氣設備、避雷針等接地裝置的電阻值，及測量低電阻導體的電阻及土壤電阻率。
該設備由手搖發電機、電流互感器、滑線電阻及檢流計組成。機構裝在塑料殼內，外有皮殼便于攜帶。附件有輔助探棒、導線等，裝于附件袋內。
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 |
