Mechanical pencil Mechanical pencil A mechanical pencil (US English) or propelling pencil (UK English), also clutch pencil, is a pencil with a replaceable and mechanically extendable solid pigment core called a "lead" . The lead, often made of graphite, is not bonded to the outer casing, and can be mechanically extended as its point is worn away. Other names include microtip pencil, automatic pencil, drafting pencil, technical pencil, click pencil, pump pen, pump pencil, leadholder, pen pencil (Indian English), and lead pencil (Bangladeshi and American English). Mechanical pencils are used to provide lines of constant width without sharpening in technical drawing and
Lead Pencil Studio Lead Pencil Studio Lead Pencil Studio is the working name of the art and architecture collaborative founded in 1997 by Annie Han and Daniel Mihalyo in order to cooperatively pursue installation art, site-specific art and functional architecture. They are winners of the 2007 Founder's Rome Prize in Architecture from the American Academy in Rome, and were recognized in 2006 as an 'Emerging Voices' by the Architectural League of New York. Their practice is self-described as "architecture in reverse...our projects are everything about architecture with none of its function...spaces with no greater purpose than to be perceived and question the certainty