Resistance Air standard 9334A Stability at 2 ppm
Precision AC/DC Air Resistance Standards 7334
Quantum Hall 6640Q Resistance Bridge, uncertainty +/- 0.015 ppm
Resistance Standard Rack Modular 6634A better than 2 ppm
Decade Resistance Standards from 1 μΩ to 10 kΩ
Oil Based Resistance Standard 7330
Decade Box 9340
Resistance transfer standards GL 1050 Accuracy better than 2 ppm
6636 Series Temperature Stabilized Resistance Standards
