A multifunctional diagnostic tray configured to clasp an oral structure when positioned in a mouth. The inert atmosphere may be nitrogen gas supplied from a liquid nitrogen source. The second end comprising means for attaching the elongate body to an external holding device such as a collet or chuck adapter seated in a headstock spindle assembly. % acetophenone in mesitylene, wherein the performance of the solvent system is comparable to dichlorobenzene. In order in this case to improve on the one hand the erosion resistance of the screen and on the other hand the dielectric strength of the arrangement, the disclosure proposes that coatings composed of high-melting-point material or composed of refractory metals be fitted at least partially in the area of the screen or other components within the vacuum interrupter chamber. It makes use of a combination of the subscriber’s telephone number and an alphabetical component chosen from their name, for individuals, or an alphabetical description of a department within a business, together with a database server that stores information about each subscriber, and their preferred mode of delivery.