  We sought to determine the scale of scintillation in the interstellar plasma
of PSR J0437-4715. We used the Very Long Baseline Array to obtain scintillation
amplitude and phase data, from dynamic spectra at 327 MHz. We observe two
scales of scintillation of pulsar PSR J0437-4715, differing by more than an
order of magnitude in scintillation bandwidth. The wider-bandwidth scale of
scintillation that we observe indicates less scattering for this pulsar than
for other nearby pulsars, except for PSR B0950+08.
