生產(chan)過程中(zhong)(zhong)，要(yao)(yao)使(shi)用(yong)(yong)(yong)(yong)不(bu)同精(jing)度(du)(du)(du)的(de)(de)(de)(de)(de)量(liang)(liang)具對加工(gong)(gong)(gong)的(de)(de)(de)(de)(de)工(gong)(gong)(gong)件(jian)進(jin)行檢測(ce)，而(er)這些量(liang)(liang)具和儀器又(you)要(yao)(yao)經常(chang)使(shi)用(yong)(yong)(yong)(yong)更的(de)(de)(de)(de)(de)標(biao)(biao)準量(liang)(liang)具——量(liang)(liang)塊(kuai)，來校驗和調(diao)整，量(liang)(liang)塊(kuai)除了(le)作為(wei)(wei)標(biao)(biao)準量(liang)(liang)具外(wai)，它還(huan)可以直接或間接測(ce)量(liang)(liang)極的(de)(de)(de)(de)(de)工(gong)(gong)(gong)件(jian)。因此，量(liang)(liang)塊(kuai)是(shi)機械工(gong)(gong)(gong)廠中(zhong)(zhong)、級(ji)別高(gao)(gao)的(de)(de)(de)(de)(de)量(liang)(liang)具，也(ye)(ye)是(shi)長度(du)(du)(du)尺(chi)寸(cun)(cun)傳(chuan)遞(di)的(de)(de)(de)(de)(de)標(biao)(biao)準。由于量(liang)(liang)塊(kuai)有的(de)(de)(de)(de)(de)精(jing)度(du)(du)(du)，為(wei)(wei)方便制造，按偏差分為(wei)(wei)00、0、k、1、2、3共(gong)六(liu)個級(ji)；為(wei)(wei)了(le)提高(gao)(gao)使(shi)用(yong)(yong)(yong)(yong)精(jing)度(du)(du)(du)，又(you)按測(ce)量(liang)(liang)不(bu)確(que)定(ding)度(du)(du)(du)分為(wei)(wei)1、2、3、4、5、6共(gong)六(liu)個等(deng)(deng)。按“級(ji)”使(shi)用(yong)(yong)(yong)(yong)就是(shi)按量(liang)(liang)塊(kuai)的(de)(de)(de)(de)(de)公(gong)稱尺(chi)寸(cun)(cun)使(shi)用(yong)(yong)(yong)(yong)；按“等(deng)(deng)”使(shi)用(yong)(yong)(yong)(yong)就是(shi)按量(liang)(liang)塊(kuai)檢定(ding)后(hou)的(de)(de)(de)(de)(de)實(shi)際尺(chi)寸(cun)(cun)使(shi)用(yong)(yong)(yong)(yong)。但(dan)許多生產(chan)工(gong)(gong)(gong)人甚(shen)至(zhi)部分工(gong)(gong)(gong)藝技術人員并(bing)不(bu)清楚，認為(wei)(wei)量(liang)(liang)塊(kuai)精(jing)度(du)(du)(du)那么高(gao)(gao)，使(shi)用(yong)(yong)(yong)(yong)時往往只看公(gong)稱尺(chi)寸(cun)(cun)(也(ye)(ye)就是(shi)按級(ji)使(shi)用(yong)(yong)(yong)(yong))。綜上(shang)所述(shu)，量(liang)(liang)塊(kuai)的(de)(de)(de)(de)(de)精(jing)度(du)(du)(du)的(de)(de)(de)(de)(de)確(que)非(fei)常(chang)高(gao)(gao)，但(dan)確(que)有“等(deng)(deng)”、“級(ji)”之分，若使(shi)用(yong)(yong)(yong)(yong)不(bu)當就要(yao)(yao)出問題(ti)。正(zheng)確(que)的(de)(de)(de)(de)(de)方法應該是(shi)按“等(deng)(deng)”使(shi)用(yong)(yong)(yong)(yong)。如果需要(yao)(yao)按“級(ji)”使(shi)用(yong)(yong)(yong)(yong)，也(ye)(ye)應該按規程要(yao)(yao)求，檢定(ding)后(hou)再(zai)使(shi)用(yong)(yong)(yong)(yong)。
