FLUKE 731A CALIBRATORThe 731A DC Transfer Standard will furnish a variety of precision voltages with specific voltage outputs of 1.000, (1.018 + Delta E), (1.019 + Delta E), 10.000 and Delta E Volts. It may be used as a 1 volt, or 10 volt standard output, electronic standard cell, or 0 to 1000 ?v standard source and a standard cell comparator. It has a transfer accuracy of 2 ppm between standard cells, 3 ppm between standard cell and 1V output and 5 ppm between standard cell and 10V output.