An apparatus and method for measuring thermophysical property value of a specimen. In order to facilitate the educational process, the invention provides the user with robust ability to control parameters of the graphical objects, allowing the user to create simulations or models of subject matter, such as mathematical principles, in order to facilitate the educational process. A current limiter is configured to limit current flow through the reference electrode and thereby reduce corrosion of the reference electrode. The M converted source code features have been converted by compiler conversion software in order that the P computer programs may be compiled into executable program codes by a new version of a compiler. The skin of at least one panel extends beyond the end face of the panel and is received in a recess in the skin of the adjacent panel so the two panels can be welded together to form a flat, continuous planar skin.