The Seaward CR/20K 4-Terminal Calibration Resistor, High Accuracy, 20 kOhms combines high accuracy, class 0.02, long term stability and permanence of calibration in a compact unit. Constructed using carefully selected low temperature coefficient Zeranin wire and mounted to ensure mechanical stability, these resistors will provide a cost effective addition to any laboratory or workshop. Typical applications of the CR20K include calibration reference, accurate current measurement instrument calibration and accurate shunt resistors.