半径规178系列：材料：钢板（SPCC）精度：0.1R~3.0R（±0.03mm）3.25R~23.0R（±0.04mm）24.0R~30.0R（±0.05mm）31.0R~50.0R(±0.08mm)*178-112/178-213：不锈钢材料用途：能迅速测量管外径等等圆槽形的R部。各量规标有半径尺寸。高精度。特色：具有圆角和方角的内外径测量片，适用于各类形状的工件。公制mm编号型号片数尺寸组合01-308178MAA200.10.20.30.40.50.60.70.80.91.001-316178-112201.11.21.31.41.51.61.71.81.92.001-317178-213202.12.22.32.42.52.62.72.82.93.001-309178MA341.01.251.51.752.02.252.52.753.03.54.04.55.05.56.06.57.001-310178MB327.58.08.59.09.510.010.511.011.512.012.513.013.514.014.515.001-315178MR3015.516.016.517.017.518.018.519.019.019.520.021.022.023.024.025.001-311178MC1616.017.018.019.020.021.022.023.001-312178MD1424.025.026.027.028.029.030.001-313178ME2031.032.033.034.035.036.037.038.039.040.001-314178MF2041.042.043.044.045.046.047.048.049.050.0