Remember that the 1930s was also when Lithgowicon was getting serious about Bren and Vickers production. On the other hand, during the Depression and whenever "Defence" orders were scarce, they turned to other industrial; production: Shearing hand-pieces, sewing-machine components, aircraft parts. Anything to keep a workforce and the associated skills on the job.

It's not like the possibility of more war in the near future was not considered.
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