| 摘要 |
A machine for testing hardness by the Rockwell method and apparatus includes a single lever permanently supporting a pre-loading weight positioned on the same side of the lever fulcrum as the operative connection of the lever to a penetrator, and, on the free end of the lever, an attachment to a main weight, all moving parts being articulated and guided exclusively by transversely elastically flexible but longitudinally non-extensible blades which are restrained at their ends.
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