变幅杆宽度
对于矩形变幅杆，指垂直于螺柱轴线方向的最大尺寸。若未指明位置，则假定在变幅杆端面处测量。
示例：对于端面尺寸为 125 mm x 50 mm 的变幅杆，其宽度为 125 mm，厚度为 50 mm。
有时，对于非常宽的条形变幅杆，宽度可能反而被称为长度。例如，对于 300 mm 宽的条形变幅杆，有人可能会（错误地）说长度为 300 mm。这种"长度"的用法容易造成混淆，因为"长度"指的是（通常）平行于螺柱轴线的尺寸。
Horn width
For a rectangular horn, the largest dimension transverse to the stud axis. If no location is specified, the width is assumed to be measured at the horn face.
Example: in a horn whose face dimensions are 125 mm x 50 mm, the width is 125 mm and the thickness is 50 mm.
Sometimes for very wide bar horns the width may instead be called the length. For example, for a 300 mm wide bar horn someone may incorrectly say that the length is 300 mm. This use of "length" is potentially confusing because "length" refers to dimensions that are (generally) parallel to the stud axis.