Calculation of Vickers hardness.

Keyword Vickers hardness,diagonal length of dent,Test force.

Reference [1]：Japanese Industrial Standards Committee：『Vickers hardness test-Test method』,JIS Z 2244：2009.

Remarks ・※1：0.102≒1/9.80665. ・LaTex：　\textup{HV} =0.102\frac{2F\sin\frac{136^{\circ}}{2}}{d^{2}} ・Making above Equation Image is powered by CODECOGS

History ・2010/05/07：Upload.