《明史·志·卷四十四》
九品官以外，没有入流内的官员，用铜制绦记，宽一寸三分，长二寸五分，厚二分一厘。
未入流者，铜条记，阔一寸三分，长二寸五分，厚二分一厘。
In addition to the ninth-rank officials, officials who did not enter the stream used copper ribbons with a width of 1.3 inches, a length of 2.5 inches and a thickness of 0.21 inches.