花崗石(大理石)方尺采用天然優(yōu)質(zhì)的 濟(jì)南青 加工而成,形態(tài)極為穩(wěn)定,不會(huì)因?yàn)槌R?guī)的溫差而變形?;◢徥ù罄硎┓匠叩木龋?00級(jí)、00級(jí)、0級(jí)。1)花崗石(大理石)方尺行業(yè)標(biāo)準(zhǔn):據(jù)國(guó)家
機(jī)械行業(yè)標(biāo)準(zhǔn):JB/T10027-99制造。用于垂直度、平行度檢測(cè),并可作為90 絕對(duì)測(cè)量基準(zhǔn)。2)花崗石(大理石)方尺的規(guī)格型號(hào): 規(guī)格(mm)工作面平面度相對(duì)面平行度工作面間垂直度每對(duì)平行規(guī)H.W之差精度等級(jí)(mm)000000000100 100 1000.0010.0020.0010.0020.0010.002150 150 1500.00150.0030.0010.0020.00150.003200 200 2000.0020.0040.00150.0030.0020.004300 300 3000.0030.0060.00150.0030.0030.006400 400 4000.0040.0080.0020.0040.0040.008500 500 5000.0040.0080.0020.0040.0040.008