One compact, handheld professional tester now combines more of the technologies you need to test aircraft. The MIZ-21SR combines eddy current with two types of bond testing methods - resonance and sondicator. It also includes a built-in mode to measure conductivity and coating thickness across a broad frequency range - from 60 kHz up to 480 kHz. The MIZ-21SR employs the latest technology for superior flaw detection. High-gain input stages combined with noise-suppressing synchronous demodulation circuitry results in the best signal-to-noise ratio in the industry. The combination of a 16-bit A/D industrial converter with high-gain analog circuitry maximizes sensitivity and signal resolution.