This is the smallest print size i've ever seen
It's a tube of glue that came with a phone repair kit. Thumb for scale.
I literally couldn't read it with the naked eye. Not that you'd want to, because once i saw the picture i realized that it's gibberish
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I bought a large jewellers loupe for checking my plants, yet I swear I've used it more for reading tiny labels. Comes in handy, some texts are miniscule (one of my nutrient bottles' instructions is as small as OP's example).