Current-viewing-resistors Series ISM allow precise measurement of peak value and waveform of fast rise time current pulses. They excel by high bandwidth, low rise time and high accuracy of resistance value. Below their upper frequency limit (-3 dB), the current-viewing-resistors ISM behave like pure dc resistors with frequencyindependent resistance value. Because of their double coaxial design current-viewing-resistors ISM are not susceptible to noise and electromagnetic interference.