工(gong)(gong)(gong)(gong)字平(ping)(ping)(ping)尺(chi)(chi)是按照/T7977-99標準制造，材質選為HT200-250，工(gong)(gong)(gong)(gong)作面(mian)采用(yong)(yong)(yong)刮研或jingmi磨削(xue)工(gong)(gong)(gong)(gong)藝，使用(yong)(yong)(yong)溫度(du)為(20±5)℃，主(zhu)要(yao)在(zai)工(gong)(gong)(gong)(gong)業生產(chan)中廣泛應用(yong)(yong)(yong)，可(ke)(ke)以在(zai)機(ji)床檢(jian)(jian)驗(yan)(yan)中檢(jian)(jian)驗(yan)(yan)不平(ping)(ping)(ping)度(du)和不直(zhi)(zhi)度(du)，工(gong)(gong)(gong)(gong)字平(ping)(ping)(ping)尺(chi)(chi)的(de)兩(liang)個工(gong)(gong)(gong)(gong)作面(mian)是配(pei)合(he)塊(kuai)規，千分尺(chi)(chi)，水平(ping)(ping)(ping)儀等儀器檢(jian)(jian)驗(yan)(yan)，不同高(gao)度(du)，兩(liang)導(dao)軌的(de)平(ping)(ping)(ping)行和不連接導(dao)軌的(de)水平(ping)(ping)(ping)，工(gong)(gong)(gong)(gong)字平(ping)(ping)(ping)尺(chi)(chi)可(ke)(ke)以配(pei)合(he)直(zhi)(zhi)角(jiao)尺(chi)(chi)，檢(jian)(jian)驗(yan)(yan)只(zhi)用(yong)(yong)(yong)直(zhi)(zhi)角(jiao)尺(chi)(chi)無法檢(jian)(jian)驗(yan)(yan)的(de)兩(liang)機(ji)件的(de)垂直(zhi)(zhi)度(du)的(de)量(liang)具，還適(shi)用(yong)(yong)(yong)于設(she)備安裝和檢(jian)(jian)查，工(gong)(gong)(gong)(gong)字平(ping)(ping)(ping)尺(chi)(chi)用(yong)(yong)(yong)于以著色法、指示表法檢(jian)(jian)驗(yan)(yan)平(ping)(ping)(ping)板(ban)、長導(dao)軌等的(de)平(ping)(ping)(ping)面(mian)度(du)，也常(chang)用(yong)(yong)(yong)于以光隙(xi)法檢(jian)(jian)驗(yan)(yan)工(gong)(gong)(gong)(gong)件棱邊的(de)直(zhi)(zhi)線度(du)。

　　工字平尺(chi)的規格表：