A primary standard for ratio measurements

Model 720A Kelvin-Varley Divider is a high-resolution primary ratio standard with absolute linearity of 0.1 ppm, temperature coefficient of linearity of 0.1 ppm/ºC, and self-calibration capability.

• 0.1 ppm resolution, seven decades
• 0.1 ppm of input absolute linearity
• Built-in self calibration bridge
• Front panel self-calibration