An interferometer has an angled beam entry to a multimode waveguide that can be formed of parallel plane mirrors. The sample is received by an ionization chamber, which ionizes molecules of the sample. The plug is buried in a contact hole formed in the low-permittivity insulating layer below the alignment mark, and contacts the alignment mark. The first and second jaw portions further include a hammer formed on the outside surface, such that the tool can be used as a hammer. The unitary structure has a plurality of arms radially disposed about a central body.