BS ISO 2238:2018规定了机桥铰刀的尺寸。对于一系列直径 范围d1，从6 mm到50,8 mm，这些工具的以下尺寸的值，单位为毫米:总长度l3；总切削刃长度l2；锥形切削刃长度，l1。除非另有说明，否则这些铰刀为右手切削。交叉引用:ISO 296ISO 1051ISO 13399（所有部分）购买本文件时可获得的所有现行修订均包含在购买本文件中。

BS ISO 2238:2018 specifies the dimensions of machine bridge reamers. It gives, for a series of diameter ranges, d1, from 6 mm to 50,8 mm, the values, in millimetres, for the following dimensions of these tools:overall length, l3;total cutting edge length, l2;tapered cutting edge length, l1.Unless otherwise stated, these reamers are right-hand cutting.Cross References:ISO 296ISO 1051ISO 13399 (all parts)All current amendments available at time of purchase are included with the purchase of this document.