HOW BIG ARE PENCILS SECRETS

7. the initial pencil sharpener was a knife, duh. In 1828, a French mathematician been given a patent for any sharpener that had two metallic data files embedded in the piece of Wooden. It wasn’t far better than the usual knife. But in 1837, two Englishmen began advertising an identical “patent pencil pointer” they called the Styloxynon.