Strictly made to measure, solid shims, whether ground or otherwise, consist of a close-grained material of predetermined thickness. They are used in all cases in which there are significant stresses (vibration, tension, shear forces, etc.). They are of very high accuracy since they are strictly made to measure and for immediate use on site. They are therefore found in some aeronautical mechanical assemblies such as mountings for equipments mounted on civil and military aircraft engines.
