  A technique for point-contact spectroscopy, based on an electro-mechanical
mechanism for the contact formation, has been developed. It is designed to be
used in both $^4$He and $^3$He cryostats. The performance has been demonstrated
by conductance measurements on various kinds of superconductors, including the
conventional superconductor Nb, the two-band superconductor MgB$_2$, and the
heavy-fermion superconductor CeCoIn$_5$. Characteristic conductance spectra
obtained prove this technique is useful for the investigation of the
superconducting order parameter. Advantages of this technique such as its
simplicity and versatility are described.
