Staedtler Mars Lumograph 100 Pencil - 4B (134 ratings) Staedtler Mars Lumograph 100 Pencil - 4B £0.99 Quantity: at £0.99 each Add To Basket 10 in stock. Premium-quality pencil for writing, drawing and sketching on paper and matt drafting film. The wide range of degrees makes Lumograph the ideal tool for artists and graphic designers. Especially break-resistant thanks to super-bonded lead. Lines reproduce well. Easy to erase. Easy to sharpen with any quality sharpener.