A mounting structure has a substrate with a plurality of terminals having helically curved portions superimposed and electrically connected to a plurality of identical helically curved terminals on a second substrate. A heating and cooling device that includes the heater unit is used as a manufacturing or inspection apparatus and is used for work with glass substrates or semiconductor substrates for flat panel displays. The assistance object can be selected by any number of user interfaces from sophisticated inference driven interactive interface search tools or categorized lists. The channel plan enables a monitoring system to, among other things, conduct automatic periodic test plans, comprising tests, on the nodes, based upon the predefined data specified in the channel plan. The engagement-receiving member defines two rod-bearing portion at the rod entrance. A secondary gas flow path in the torch receives a secondary gas separate from the primary working gas and directs it through the torch.