One embodiment of the present invention provides a process for selective etching during semiconductor manufacturing. The server enables vehicle troubleshooting and inspection to be performed simply without the need for the vehicle owner to visit a dealer andor auto service shop. The connecting member is preferably a L-shaped swivelled connector that is capable of being fixed into one of two positions, a first position where the connector is freely rotatable within the patient interface, and a second position where an interference between the interface and connector prevents the free rotation of the connector within the patient interface. The apparatus further includes a detector arranged to detect charged particles originating from the sample portion. The patterns or characters to be printed are first formed on a transferring medium using a non-toxic ink, and then the non-toxic ink patterns or characters are separated form the transferring medium with water and placed on the workpiece, which is then fixed so that the patterns or characters are transferred onto the workpiece surface firmly. The support is inserted into a recess in a retainer, which recess is essentially complementary to the cylindrical jacket surface, the samples andor targets are acted upon by way of physical andor chemical interactions, and the correspondingly modified spots are then analyzed.