Long gone are the days when we had to pluck goose feathers and use them for writing. Today, there are thousands of pens and pencils, of all sorts of sizes and shapes to choose from. But still pencil is more comfortable than pen. Pencils use graphite as leads. The basic difference is that pencils make erasing possible with an eraser attached on the other end or a separate eraser is used. We all know that classic wooden pencils are identifiable symbols of education systems throughout the world. But nowadays it has been changed with the mechanical pencil because of its ease use.
A mechanical pencil is a type of pencil in which the graphite lead is not attached to the outer casing as is in standard pencils. The lead consists of a thin stick of graphite, wax and clay. This means that the lead can be extended as it wears away removing the need for sharpening. Some mechanical pencils used recycled industrial carbon in place of graphite.
Nearly all mechanical pencils can be refilled by the lead that are available that are made for the pencil. Mostly the lead ranges from 0.5 mm to 2 mm in diameter. Instead of a sharpener a 'pointer' is used to sharpen the lead. These pencils have different lead thicknesses and sizes that are easily available and HB and B hardness leads are the most often used as separate leads tend not to have as many grades available as a standard pencil. This pencil would be a good choice for drawing and sketching. Many mechanical pencils come complete with an eraser. This is also replaceable and easily available.
The mechanical pencil was invented in 1822 by Sampson Mordan and Gabriel Riddle, in England. It was more of a refillable lead holder than a mechanical pencil, as users carried uniform pieces of lead in their pockets to use when necessary. Then slowly the pencil companies modified and gave us the best light weight with extraordinary clear lead to use.
Allowing precise and uniform strokes without the hassle of constant sharpening.
They are also environmentally friendly, saving wood and eliminating the wood shavings of traditional pencil.
With a Mechanical Pencil you can change the lead type or color when it suits you. There is also no need to sharpen the lead.
Finally mechanical pencils are best for standard office work, like writing, drawing, etc. You push a button and it gives you a good, standard amount of lead to do your work perfectly.