Though simple in appearance, the pencil is one of the most enduring and versatile writing tools in history. It has ...

But pencils have their place ... sets of the pencils based on their preferences for plastic or metal body types, lead thickness, and lead hardness. Six of my friends (office workers and mostly ...

Today, many U.S. companies use a numbering system for general purpose pencils that specifies how hard the lead is. For graphic and artist pencils and for companies outside the U.S., systems get a ...

Friedrich Staedtler became the first person to mass-produce pencils. In 1683, Sir John Pettus wrote a book on metallurgy in which he described the Borrowdale mine as producing a type of lead ...

However, they are more expensive. The lead consistency in the best-colored pencils varies across pencil brands and types. A pencil is generally made of lead, filled with pigment, the binder ...

Since both mechanical pencils and the regular kind contain similar “lead” (a combination of graphite ... why using plastic is so bad or why one type of wood is better than another.

The lead is not too dark and not too light ... So it's probably best to err on the safe side and double-check your pencil type before heading into the exam. IF THE REST OF THE WORLD USES A ...

though his attention soon turned mechanical pencils — a type of pencil with extendable and replaceable lead. During a visit to Chicago in 1913, Keeran stopped in a LaSalle Street stationery ...