Marking Pencils for Writing on Any Surface
If you have ever worked with a surface other than wood or paper, you're probably familiar with the benefits of a grease marking pencil. This tool is called by several different names: mechanical grease pencil, China marker, marking pencil, grease marker, etc. These names all refer to the same main tool–a nontoxic writing implement that can be used on any surface. The Listo Pencil Company, who invented the grease marking pencil, has been manufacturing these tools since 1921. Production continues today, as the marking pencils have proven useful in various industrial, restaurant, and construction-based settings.