In this device, a whetstone disk and a disk-harped sample piece are rotated and pressed to each other with their pivots being patroller, which causes a difference in surface speed and thus wears the sample piece. The sand-fall device prevents the sticking of the friction surfaces. Among all, we have especially enhanced the accuracy of the sand fall.

AND에서 직접 제작하는 특수목적 시험기입니다.