London, Feb 11 (ANI): The world's smallest engraving has been completed on the edge of a razor blade and it says 'Nothing is impossible'.
Graham Short, from Birmingham, took around 150 attempts before he was able to complete it on 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.
He was only able to work at night, when traffic vibrations are at a minimum, with his right arm bound to the arm of his chair with a luggage strap to minimise unwanted movement.
He used a stethoscope to monitor his heart, attempting a stroke of the letter only between beats, when his body is perfectly still.
He worked from midnight to 5.30am most nights of the week, for seven months on his razor blade. On a good night he'd manage three minuscule letters.
The Wilkinson's Sword blade is now available to buy, with a 47,500 pounds price tag.
"I honestly think this is as small as it's possible to with the human hand. Since I started engraving in the early 1960s, I've always wanted to engrave smaller than anyone else in the world. And now I think I've done it," the Telegraph quoted him as saying.
"It's a matter of minute amounts of pressure. I admit I've become a bit obsessed by it, but I just can't resist the idea of going smaller and smaller.
"When I finished the razor blade I was absolutely thrilled. I had been almost there so many times and then ruined it with one slip. This was probably the 150th blade, but I must admit I lost count," he said. (ANI)