720A Kelvin Varley Divider

This classic 7-decade Kelvin Varley divider includes a built-in Wheatstone bridge for alignment purposes. It features linearity errors of fractions of a part per million. It has numerous applications, including calibration of other dividers, intercomparison of standard resistors and providing low level direct voltages.

This one is in nearly new condition and works a treat. There is a specification sheet below.