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Line 74:
Line 74: − With the diamond penetrator, read Column C on the barrel dial (black numbers).+ − With the ball penetrator, read column B (red numbers).+
Rockwell Hardness Tester (view source)
Revision as of 16:39, 21 January 2018
, 16:39, 21 January 2018→Procedure
6. Take the reading
6. Take the reading
With the diamond penetrator, read Column C on the barrel dial (black numbers).
With the ball penetrator, read column B (red numbers).
NOTE: The first two or three tests may be low until the penetrator and anvil have become firmly seated.
NOTE: The first two or three tests may be low until the penetrator and anvil have become firmly seated.