Standard Block For Hardness
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Based on Japanese Industrial Standard
* The hardness standard is exceedingly accurate up to the world recognized values.
* The irregularity in hardness among individual pieces, or the range of error is extremely small.
* The uniformity in hardness is quite ideal
* Rockwell & Rockwell Superficial scale (HR), Vickers (HV), Micro-vickers (HMV), brinell (HB), etc.
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| 来源 | SG |