10pF up to 5000µF 0.5Ω up to 500MΩ antiquated
Resistance-Capacitance Bridge are most commonly used as a capacitor tester. The balanced bridge measures capacitance from 10pF up to 5000µF and resistance from 0.5Ω up to 500MΩ. During component value testing, the magic eye tube serves as the null-indicator. When the bridge is far from balanced, the target area of the magic eye tube glows completely closed green, and in fact overlaps. As the pointer dial approaches balance point, first the overlapping disappears and eventually the entire target area of the eye tube is completely open (dark). The bridge is balanced when the maximum dark area is indicated, and you can then read the value of your component on the faceplate scale. The magic eye tube is used for both Leakage testing and component value testing.