Digital Ultrasonic Flaw Detector has been created as a cost-effective alternative to fixed hardness testing devices. In manufacturing, materials are tested to know about the characteristics of a novel material and to ensure that a sample meets a certain need. Convenience is not always possible while doing hardness tests with traditional hardness testing equipment. One popular device measures the frequency shift produced by a resonating rod fitted with a diamond tip if a particular test load is applied. The frequency change is determined and shown as a hardness value on the LCD.
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