  The recent launches of Parker Solar Probe (PSP), Solar Orbiter (SO) and
BepiColombo, along with several older spacecraft, have provided the opportunity
to study the solar wind at multiple latitudes and distances from the Sun
simultaneously. We take advantage of this unique spacecraft constellation,
along with low solar activity across two solar rotations between May and July
2020, to investigate how the Heliospheric Current Sheet (HCS) structure varies
with latitude. We visualise the sector structure of the inner heliosphere by
ballistically mapping the polarity and solar wind speed from several spacecraft
onto the Sun's source surface. We compare this observed sector structure, and
the local orientations of the boundaries, to a predicted HCS. We show that fine
scale ripples in the HCS can be resolved down to several degrees in longitude,
with solar wind speed being a useful indicator of when a spacecraft is near the
HCS without changing magnetic polarity. We found that the local orientation of
sector boundaries were broadly consistent with the shape of the HCS but were
steepened due to compression from stream interaction regions. We identified
several transient magnetic clouds associated with HCS crossings, and have shown
that these could disrupt the local HCS orientation up to five days after their
passage, but did not significantly affect the position of the HCS. This
spacecraft constellation, along with ballistic mapping, can reveal the
structure of the HCS on scales of a few degrees in longitude and latitude,
while discerning between co-rotating and transient structures. This also
provides an accurate representation of the solar wind within $\pm 10^{\circ}$
latitude, which could be used as a more rigorous constraint on solar wind
models and future space weather predictions. In the future, this range of
latitudes will increase as SO's orbit becomes more inclined.
