Regardless of your interests or whatever industry you may be familiar with, if you have ever worked with a surface other than wood or paper which required you to write upon it, you're probably familiar with the benefits of a grease marking pencil. This type of pencil or tool is called by several different names: mechanical grease pencil, china marker, marking pencil, grease marker, etc. These names are synonymous and refer to a nontoxic writing implement that can be used to w
