Editing Pencil (section)

===Extenders===
{{Main|Pencil extender}}

Historian Henry Petroski notes that while ever more efficient means of mass production of pencils has driven the replacement cost of a pencil down, before this people would continue to use even the stub of a pencil. For those who did not feel comfortable using a stub, pencil extenders were sold. These devices function something like a ''porte-crayon''...the pencil stub can be inserted into the end of a shaft...Extenders were especially common among engineers and draftsmen, whose favorite pencils were priced dearly. The use of an extender also has the advantage that the pencil does not appreciably change its heft as it wears down.<ref name=Petroski/> Artists use extenders to maximize the use of their [[colored pencil]]s.