  The electron transport in a four-terminal nanodevice consisting of two
crossed nanotubes is investigated in the framework of the Landauer-Buttiker
formalism. The evident formula for the ballistic conductance of the device is
found using a model of crossed conductive cylinders with a point contact
between them. Sharp conductance dips stipulated by resonance scattering on the
contact are shown to appear in the conductance of the first cylinder. The
conductance between the cylinders has resonant behavior. The form and the
position of resonant peaks are studied. Our results indicate that the form of
asymmetric dips and peaks in the conductance differs from the well-known Fano
line shape. We have shown that the maximal value of the conductance between
cylinders does not exceed a unit of the conductance quantum.
