将对零轴转至TEST
按下对刀平面至静止，转数指针会指示零位，转动表圈使大指针对零位
使用时将对零轴转至USE
将对刀器放在工件上，把磁性座的开关转到“ON”，刀具慢速进给至对刀面，使大、小指针同时对零位，则刀具与工件的距离是50mm/2in。
Turn the button of stting-zero from “use” to “test”;
Press down, the small indicator will show “0”, keep your hand
and then adjust indicator to be zero at long-needle;
Turn the botton of setting-zero to “use” before use ;
Put on the work piece, cutter touch probe side,
when the long-needle and short-needle moving to “0” at the same time,
the distance of the cutter with work piece is 50mm/2in.