A pencil is a writing device that is smoothed out thin pigment, charcal,and clay. It was encased with thin wood.
In Acient Rome, a sofer wrote on a papyrus with a stylus, Stylus is a acient metal stick. The stylus was mostly used by Ancient Egyptians and Roman.Graphite came was into spread use following the discovery of a large graphite deposit in Borrowdale, England in 1564. the graphite came to a darker prnit, but was a soft and lite. the sticks of graphite were in string.The graphite was inserted into wooden sticks that had been hollowed-out by hand! The wood-cased pencil was born.
On 30 March 1858,Hypen lypin made the first pencil with an eraser. The eraser was at the end of the pencil. His first patient bought he pencil with an eraser Joseph Reckendorfer for $100,000.
In 1890 L. & C. Hardtmuth Company of Austrlia made the first colored pencil, witch were made out of wax like cores with pigment. The colors were often blended togther.Grease pencil from china wrote on anything like glass,wood, and metal.
There is also Golf pencils. Golf pencils are usually short like 9 inches and very cheap. They are also known as library pencils, as many libraries offer them as cheap , unspillable writing instruments. 
There are also pencils That are called mechanical pencils.The metohed of the mechanical is to push lead through a hole at the end and are clutch type. The erasers are replaced by a sharpener in larger lead sizes are removable too (and thus replaceable), and usually cover a place to store replacement leads. Mechanical pencils are popular for their longevity and the fact that they may never need sharpening. Lead types are based on thickness. Common sizes are 0.5, 0.7, 0.9, millimetres. They are cost alot because of their used.
