There are several different types of pencils in the market today. Here we will take a look at a few of these types, their compositions and their uses.
Indelible pencils are the pencils that produce a different colored mark when the original mark gets wet. Indelible pencils were first made with a silver nitrate base. The original patent for indelible pencils says that they are as useful as an ordinary pencil but more permanent, as the marks cannot be erased with rubber.
Copying pencils use a dye also called ink. Copying pencil marks do not change color when they get wet. These pencils are made from a wax and dye mixture.

Drafting pencils are the pencils with a lead degree of 3H or more.
Wood-less pencils are graphite rods that usually come in a plastic casing
Colored pencils are the pencils that are made using a mixture of graphite and different colored wax. These pencils mark in a wide range of colors.
China markers are the pencils that have a thick waxy core. These pencils will write on almost any surface and come in all colors. Pulling a string that is attached to the pencil commonly sharpens these pencils.
Carpenter Pencils are the pencils that are rectangular in shape. This shape keeps them from rolling away. These pencils also have a rectangular core, which allows for both thin and thick lines. These pencils are often stronger than other pencils and allowing them to be place into a bag with heavy tools and not to be broken. The builders use these pencils because they will make mark on rough wood and stone with ease.
Golf pencils are the short pencils, which are usually of 4 or 5 inches in length. They do not have an eraser.
Sketching pencils or drawing pencils are specially designed for drawing. These pencils come in many different grades of hardness. The more clay when mixed into the graphite makes the lead harder. Harder lead draws a softer line. Conversely, the more lead when mixed into the pencil makes the lead softer. Softer lead draws a thicker darker line.
Highlighter pencils are a form of makeup. These pencils come in a variety of textures and colors. Highlighter pencils reflect light. This makes them a good tool for makeup artists but difficult to get the hang of for others
There are currently 2 pencil rating systems. One is in Europe and one is in the US. The one in the US is a numerical system while the European system is based upon a lettering scheme. The European system is the one that most drawing pencils use. In this system, pencils are rated by hardness (H), blackness (B), and rather the point is fine (F). The softest pencil in this system is rated 9(B) while the hardest is rated 9(H). A pencil manufacturer, named Brookman, in the early 1900s, developed this system. In the US, the rating uses a numerical value. According to Mr Pencil, the ratings are as follows:
#1=B
#2=HB
#2 ½=F
#3=H
#4=2H
Mr Pencil think that the most common pencil in the US is the #2.