An electromagnetic transducer is disclosed. A resource parts list creating and editing unit 3 retrieves parts information on the respective parts, which is stored in the resource DB, produces a parts list, updates the parts list based parts information, and stores into a storage unit 6. The invention discloses a slotted guide system for forming the articulation, said system having a virtual fulcrum outside the tubular shaft instrument. The position of the transverse shafts and the location of the cutting knives can be changed without having to disassemble the apparatus. specimen with a predetermined spectrum of electromagnetic radiation, recording the interaction between the specimen and the electromagnetic radiation in a data record and determining the at least one characteristic parameter from the recorded data record. A motor, under the control of feedback from the sensor, rotates the wafers by way of a roller until the wafer marking is in view by the sensor.