| 儀表型號 | 測量范圍 | 刻度分格 | 內(nèi)阻或電壓降 | 
| C41-μA | 0-20μA 0-50μA 0-75μA 0-100-200-500-1000μA 0-150-300-750-1500μA | 100 100 150 100 150 | R≈4.5KΩ R≈650Ω R≈300Ω R≈1200/1100/560/300Ω R≈1250/860/400/210Ω | 
| C41-mA | 0-5-10-20-50mA 0-100-200-500-1000mA | 100 100 | U≈38.5~44.5mV U≈45mV | 
| C41-A | 0-2-5-10-20A 0-1.5-3-7.5-15-30A | 100 150 | U≈45mV U≈45mV | 
| C41-mA.A | 0-1.5-3-7.5-15-30-75-150- 300-750mA-1.5-3-7.5-15A |   150 |   U≈23~45mV |