‘Nothing is Impossible’ – World’s Smallest Engraving on the Edge of a Razor Blade

world's smallest engraving

The world’s smallest engraving by human hand has been completed on the edge of a razor blade.

Graham Short etched the motto “Nothing is impossible” which measures just a tenth of a millimetre.  The letters are invisible to the naked eye, and can only be read with a medical microscope at 400 times magnification.