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2. Mechanical pencil - Wikipedia

   en.wikipedia.org/wiki/Mechanical_pencil

   As with non-mechanical pencils, the leads of mechanical pencils are available in a range of hardness ratings, depending on the user's desired balance between darkness and durability. A commonly-used mechanical pencil lead is identical in density, but not in thickness to a traditional HB (US#2) pencil lead.

3. Pencil - Wikipedia

   en.wikipedia.org/wiki/Pencil

   Lead for mechanical pencils Flexible pencils. Mechanical pencils use mechanical methods to push lead through a hole at the end. These can be divided into two groups: with propelling pencils an internal mechanism is employed to push the lead out from an internal compartment, while clutch pencils merely hold the lead in place (the lead is ...

4. Yard-O-Led - Wikipedia

   en.wikipedia.org/wiki/Yard-O-Led

   The Yard-O-Led Pencil Company is a manufacturing company founded in London, England in 1934 by German immigrant, Ludwig Brenner, [1] to produce his patent propelling pencils which contained twelve three inch leads (that is to say, 36 inches or a yard of lead).

5. Blackwing 602 - Wikipedia

   en.wikipedia.org/wiki/Blackwing_602

   The Blackwing 602 is a pencil that is noted for its soft, dark graphite, unique flat square ferrule and replaceable eraser. It was manufactured by the Eberhard Faber Pencil Company from 1934 to 1988, then by the Faber-Castell pencil company from 1988 to 1994 and by Sanford from 1994 to 1998. [1] The pencil initially sold for 50 cents each.

6. List of common misconceptions about science, technology, and ...

   en.wikipedia.org/wiki/List_of_common...

   Although the core of a wooden pencil is commonly referred to as "lead", wooden pencils do not contain the chemical element lead, nor have they ever contained it; "black lead" was formerly a name of graphite, which is commonly used for pencil leads. [190]

7. Fact check: Pencils are normally used to vote as ink can ...

   www.aol.com/fact-check-pencils-normally-used...

   Pencils are commonly used at polling stations instead of pens. This is because ink might run on to different sections of the ballot and obscure the voter’s choice. The Facts.