What is the working principle of Electronic Portable Hardness Tester ?
Is it really reliable to measure final weld hardness test using Electronic Portable Hardness Tester (For Example Hardness test of all weld of a fabricated equipment at fabrication shop) ?
What is the major technical difference between conventional (Mechanical) Hardness Testing machine to find out the correctness of Hardness by using electronic hardness tester.
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