.Friday, August 15, 2008 ' 9:46 PM F
A pencil is a writing or drawing instrument consisting of a thin stick of pigment and clay, usually encased in a thin wood cylinder, paper or plastic covers are also used. Pencils are different from pens, which use a liquid marking material.Pencils are graded from 9H to 9B, with H that stands for hardness and B that stands for blackness.
Examples of pencils:
Graphite pencils
Charcoal pencils
Crayon pencils
Grease pencils
Watercolour pencils
TAN SI YING - 2e1