4. Hardness test procedure
No. 99MBG127A
4-9
3. Press the diagonal length of indentation input switch once.
4. The hardness value display is fixed and the hardness is determined.
The Knoop hardness value is displayed.
The OK/NG judgment setting allows OK/±NG to be displayed.
The settings of the curved surface compensation and read compensation allow a compensated
hardness value to be displayed.
(Compensation is performed when the hardness is determined with the setting selected to ON.)
The conversion setting allows a converted value to be displayed.
4.1.4.4 Indentation measurement at fracture toughness test
1. Operate the left measuring knob to align the measuring line at the left end of the indentation.
2. Operate the right measuring knob to align the measuring line at the right end of the
indentation.
At this moment, the display of "a1" changes.
3. Press the diagonal length of indentation input switch once.
4. The "a1" display is fixed.
1. Rotate left measuring knob.
3. Press diagonal length of indentation input switch.
2. Rotate right measuring
knob.
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