Reciprocating rasps for the surgical preparation of the bone prior to the implantation of a glenoid or acetabular component with complex geometry are disclosed. The signal is desirably processed by a technique such as neural network analysis, which can permit plural analytes to be determined simultaneously. The receiver material, including support, hold-out layer and toner receiving layer, has a volume resistivity of 1. The preform carrier also has a plurality of resilient gripping fingers extending from the base and adapted to be received through the open end of the perform and to extend into the neck of the perform.