Chinagraph Pencils or Lumocolor Glasochrom

Chinagraph Pencils, now called Staedtler Lumocolor Glasochrom, are waterproof permanent pencils for use on many different surfaces but especially noted for their ability to write on glossy surfaces like glass, metal and plastics. The pencil work is waterproof but if you need to remove it just use solvent on a cloth and it will rub right off.