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2. Plumbago drawing - Wikipedia

   en.wikipedia.org/wiki/Plumbago_drawing

   Plumbago drawings are graphite drawings from the 17th and 18th centuries. There was a group of artists whose work in plumbago is remarkable for their portraits drawn with finely pointed pieces of graphite and on vellum. These works were initially prepared as the basis of an engraving. Eventually they would be produced as works in their own right.

3. Category:Pencils - Wikipedia

   en.wikipedia.org/wiki/Category:Pencils

   A pencil is a handheld instrument containing an interior strip of solid material that produces marks used to write and draw, usually on paper. The marking material is most commonly graphite, typically contained inside a wooden sheath. However, other marking materials are used, such as charcoal or cosmetics (as in an eyebrow pencil

4. Mechanical pencil - Wikipedia

   en.wikipedia.org/wiki/Mechanical_pencil

   A typical construction of a ratchet-based mechanical pencil. A mechanical pencil or clutch pencil is a pencil with a replaceable and mechanically extendable solid pigment core called a "lead" / ˈ l ɛ d /. The lead, often made of graphite, is not bonded to the outer casing, and the user can mechanically extend it as its point is worn away from ...

5. Pencil - Wikipedia

   en.wikipedia.org/wiki/Pencil

   Two graphite pencils. Both are labelled "HB", but the numeric label differs between "2" and "2 1 ⁄ 2 ". A grading chart ranging from 9B to 9H. Graphite pencils are made of a mixture of clay and graphite and their darkness varies from black to light grey. A higher amount of clay added to the pencil makes it harder, leaving lighter marks.

6. Derwent Cumberland Pencil Company - Wikipedia

   en.wikipedia.org/wiki/Derwent_Cumberland_Pencil...

   Derwent colour pencils have traditionally been sold in tins of 12, 24, 36 and 72 different colours. They are also available in a range of wooden presentation boxes or sets of six which are intended to be trial packs. Derwent's oldest line of colour pencils, Artist, were expanded from a range of 24 to 72 in 1939 and from 72 colours to 120 in 1996.

7. Koh-i-Noor Hardtmuth - Wikipedia

   en.wikipedia.org/wiki/Koh-i-Noor_Hardtmuth

   At the 1889 World Fair in Paris, the Hardtmuths displayed their pencils rebranded as "Koh-I-Noor Hardtmuth". Each pencil was encased in a yellow cedar -wood barrel. The inspiration for the name was the Koh-i-Noor diamond (Persian for "Mountain of Light"), part of the Crown Jewels of the United Kingdom, and the largest diamond in the world at ...