The shape of Knoop indenter is of ___________

The shape of Knoop indenter is of ___________ Correct Answer pyramid with major and minor diagonal

The Knoop hardness measurement is made with pyramid based indenter with major and minor axis in the ratio of 1:7, as shown in the figure. This creates a region of the state of plane strain in the deformed region.

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What is the shape of indentation by knoop indenter?