Manufacturing coloured pencils. Close-up of coloured pencil lead being made. Here the lead is coming out from the ropemaking machine. Coloured lead is made from a mixture of a white clay called kaolin,natural or synthetic colour pigments,and a binder | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Landmann, Patrick |
Bildgröße: | 5232 px × 3425 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |