材料、制造要求、精度、试验、尺寸。圆形柄苏格兰式有眼螺旋钻；实心中心螺旋钻头（詹宁斯式机头）；苏格兰式螺旋钻头；詹宁斯模式螺旋钻头，带螺旋手柄。见BS 1978。交叉引用:BS 309BS 427BS 860BS 970BS 1978

Material, manufacturing requirements, accuracies, tests, dimensions. Scotch pattern eyed auger with round shank; solid centre auger bit (Jennings pattern nose); Scotch pattern auger bit; Jennings pattern auger bit, with auger handles. See BS 1978.Cross References:BS 309BS 427BS 860BS 970BS 1978