How big is a Micron?

When you’re working with precision components, a few microns can sound like a significant difference. But how big is a micron, really? And does a difference of 5, 10, or even 20 microns always matter?

When you’re working with precision components, a few microns can sound like a significant difference. But how big is a micron, really? And does a difference of 5, 10, or even 20 microns always matter?