Looks like the Swiss Army Knife was actually invented in the times of the Roman Empire.

Found in the Mediterranean a few years ago, this Ancient Roman multi-tool includes a three-pronged fork, spatula, pick, spike and knife, 3rd century AD.
It’s made of iron and silver, and it probably belonged to a traveler of the time (and so the definition of “Roman Army Knife”, while fun, is probably incorrect).
This object is part of the collections of the Cambridge Fitzwilliam Museum.

This is another one of those things that, should I put it in an Aculeo & Amunet story¹, would be probably criticized as unlikely or “wrong”.

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