| 摘要 |
<p>A shim assembly (10) for a pole face (12) of a magnet . A non-magnetizable shim tray (34) may be positioned proximate, and preferably is attachable to, the pole face. The positioned shim tray has a surface hole (40) having longitudinally adjacent first and second portions. The second portion has a generally circular circumference. The first portion has a perimeter generally identical to the circumference but with, for example, a flat region. A shim holder (36) has a perimeter generally identical to the perimeter of the first portion so that it may be inserted through the first portion and into the second portion of the surface hole. A predetermined shim (38) is removably attachable to the shim holder. The inserted shim holder, with the attached shim, is rotatable, and, when so rotated, the flat regions of the perimeters of the shim holder and the second portion of the surface hole are misaligned.</p> |
