花岗石平尺产品说明：用于直线度和平面度测量。欢迎洽询特殊规格。根据国家机械行业标准：JB/T7878-1999制造。用于直线度和平面度测量。规格（mm）工作面直线或平面度工作面间平行度侧面对工作面垂直度精度等级um000000000500 100 401.62.62.43.98.013.0750 100 402.13.53.25.311.016.01000 120 403.05.04.57.515.025.01000 120 603.25.34.97.915.625.81200 120 603.696.25.48.516.426.51500 150 604.27.26.511.021.536.21600 150 804.47.46.611.122.037.02000 200 805.410.08.113.527.045.02500 200 806.014.310.213.835.069.63000 200 1008.016.012.014.042.081.2