The terminal ends of a dual lead wire are secured against detachment from a pair of terminal jacks by a pair of C-shaped supports positioned adjacent the jacks and engaged by the dual conductors of the wire in a light knob switch socket assembly. Diamond SAW devices should be made on the diamond films or bulks with the defect density less than 300 particles cm2. The at least two containers define respective interior portions for receiving a working fluid. 07 the propagation number of the waveguide wave. Selection of an option for a version which is not materialized results in derivation of the user-selected version from either a materialized version or any other version from which the user-selected version may be derived. The interference filter is formed to obtain a transmittance characteristic corresponding to a measurement parameter, depending on a condition of an intensity distribution with respect to incidents angles of light incident on the interference filter.