Maybe not in the rain... but sometimes in the office I'm feeling like I'm being p***ed on. Erm, Sorry about that. I guess what they are trying to display is the durability of the steel, and that it won't corrode quickly. Particularly in highly humid environments.
Think you're right. The ruggedness and surviving in out-of-the-way and tropical spots was a theme for Royal advertisements for a while.
I wonder was the article dated April 1st?
Hm, there's a thought. But no; was January '38.
Weird! What is it, a Royal?
Yes, as far as I can tell it is.The overall durability theme matches the later market positioning of Royal over the forties I think, looking at some ads of the period. E.g. picture of Singapore and how well the machines stand up to it there.