用途：方箱是機械制造或修理用來檢驗機械另件的不平行度、不垂直度和劃線的必要工具 規格(mm)平行度平面度垂直度精度等級( m)00級0級00級0級00級0級100 100 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 5000.0050.0100.00250.0050.0050.010600 600 6000.0060.0120.0030.0060.0060.012800 800 8000.0080.0160.0040.0080.0080.016