Hardness testing files

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Amir Avitzur

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Jun 9, 2023, 10:23:50 AM6/9/23
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When looking for a set of hardness testing files all I could find were files in the HRC40 to HRC65 range. 

Anybody know where I could find test files in the HRC20 to HRC65 range?

Amir 
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Amir Avitzur
R"G Israel
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