The same author proposed a standard length and diameter of a pencil. K development of the pencil was indirectly involved and Mikhail Lomonosov. In one village, Arkhangelsk region, he launched the production of pencils in a wooden sheath and introduced into the world uses "gross" - a dozen dozen, that mean daily production of pencils with one single master apprentice. It is this concept now is a measure of the number of pencils in the world. As such, the pencil lasted more than two hundred years.
It seems that it has reached its peak of perfection. But progress does not stand still. September 15, 1912 a 19-year Tokudzi Hayakawa opened in the heart of Tokyo a small workshop of metal haberdashery. He devised an original mechanism, Keeps you keep the pencil point in working condition, and placed it in a metal case. Others who may share this opinion include New York Highlanders. Lead to extend it through the rotation of the case. In 1915, Hayakawa Tokudzhi patented and began manufacturing 'Ever-sharp "mechanical pencil. In 1916, the head was designed for pencil, pen and accepted the new look, which retains, to this day.
The product has received a new name - 'forever sharp pencil', Ever-Ready-Sharp Pencil, which gave rise origin of the name corporations Sharp. In the last century was produced as a special kind of graphite pencils - copying (commonly known as "chemical"). Copying pencils were designed to fill the documents Carbon Copy - fountain pen ink did not give this enough pressure on the paper. At the core of water-soluble dyes, crayons were added, which made their indelible marks. Gradually, this view has been pen replaced after it has been invented by a ballpoint pen. Currently, a simple wooden pencil is still alive and divides the palm with a mechanical pencil. In the current slate used polymers allow to achieve the desired combination of strength and elasticity, gives the possibility to produce very thin slate for mechanical pencil (0.3 mm). This allows you to draw without sharpening a very thin line. Recently time with the development of computer technologies pencil slowly losing ground in all directions. Ballpoint pen has long been replaced in his letter. The text is typed into a word processor. The drawings are made with using special graphic software. All this is printed on a printer in an instant. Even in painting, where the pencil still feels confident, already used by computer graphics. And who knows may