The Seaward CR/0.0005 4-Terminal Calibration Resistor, High Accuracy, 500 μOhms combines high accuracy, class 0.05, long term stability and permanence of calibration in a compact unit. Constructed using carefully selected low temperature coefficient Manganin wire and mounted to ensure mechanical stability, these resistors will provide a cost effective addition to any laboratory or workshop. Typical applications of the CR0.0005 include calibration reference, accurate current measurement instrument calibration and accurate shunt resistors.