適合于垂直度和平行度的檢測。垂直度標(biāo)準(zhǔn)DIN875。為減少重量及方便加工而增加了減重孔。4個邊相對平行并且相鄰垂直。規(guī)格（mm）重量（kg）訂貨號等級精度（um）250x250x407.0FB0110004.0FB01010002.0FB010010001.0350x350x5018.0FB0210006.0FB02010003.0FB020010001.5500x500x5030.0FB0310008.0FB03010004.0FB030010002.0750x750x6070.0FB04100012.0FB04010006.0FB040010003.01000x1000x80150.0FB05100016.0FB05010008.0FB050010004.0