The Bod is a reference library, not a museum, and doesn't store physical artefacts other than manuscripts. When the collection first arrived there was a one off exhibition which took over a large part of the MHS basement and did include some Bodleian Marconi documents, but the two bodies don't normally present joint exhibitions. The paper stuff went to the Bod and everything else went to the MHS.
The Bod now has its own tourist oriented exhibition space, the
Weston Library almost opposite the MHS on Broad Street. This was created from the 1930s 'New Bodleian' building after it became redundant for University research use.
https://en.wikipedia.org/wiki/Weston_Library