What's the smallest LEGO component, based on its largest dimension? There's already a question asking what the smallest component is.

However, according to its answer, the smallest piece would be the screwdriver.

It is pretty small, but its length is over 2 studs, perhaps even exactly three (I don't have one on hand to check). A regular 1x2 plate is smaller in that regard.

What is the smallest piece measured by its largest dimension?



The smallest I could come up with is the 1x1 round plate. Is there anything smaller?
This tiny tiara piece is smaller than the 1x1 round plate on all sides (middle piece in my image below).