Hi Andy,
Here's some pictures of the chassis assemblies in another Baird theatreland model, the "Lyric".
The Garrick and Lyric TVs were part of a series of models manufactured after WW2. There was also an Adelphi model.
The story goes that J.L. Baird's friend Jack Buchanan financed the TV manufacturing project.
From Helensburgh Heritage:
http://www.helensburgh-heritage.co.u...ird&Itemid=457
DFWB.