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A Brummie Dude
Anchor plate - WikipediaV iv
I'm afraid I have no idea
Nico. they were to help hold the walls up. A metal bar was run therough the building and heated, and then the ends, which were usually crosses of S shapes were attached and the bar allowed to cool. It contracted and pulled the walls together and helped hold them up. Or at least that was what I was taught at school, though can't seem to find anything on the internet after a short search