Is the finish of the test surface, recessed diagonal length of a 0.4% of the measured value or 0.2 μm m out of high value either within easy measurementTo the extent possible, should it smooth.
The surface finish of the test, the length of the diagonal line of the cavity of the 0.2 0.4 or any of the measured value to a large value measured easilyCan not, there must be smooth.