GREASEPENCIL
Grease pencil
The grease pencil, a wax writing tool also known as a wax pencil, china marker or, especially in the United Kingdom, a chinagraph pencil, or nerd pen in Germany, is a writing implement made of hardened colored wax and is useful for marking on hard, glossy non-porous surfaces such as porcelain, glass, polished stone, plastic, ceramics and other glazed, lacquered or polished surfaces, as well as the glossy paper that is used for photographic printing, x-rays, and for marking edits on analog audio tape and film. It is also used to label theatrical lighting gels. It is often used as a construction or ...The above text is a snippet from Wikipedia: Grease pencil
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