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將對(duì)零軸轉(zhuǎn)至TEST
按下對(duì)刀平面至靜止,轉(zhuǎn)數(shù)指針會(huì)指示零位,轉(zhuǎn)動(dòng)表圈使大指針對(duì)零位
使用時(shí)將對(duì)零軸轉(zhuǎn)至USE
將對(duì)刀器放在工件上,把磁性座的開關(guān)轉(zhuǎn)到"ON",刀具慢速進(jìn)給至對(duì)刀面,使大、小指針同時(shí)對(duì)零位,則刀具與工件的距離是50mm