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 abatement in the United States reductions in crime, and more. The immense costs of inaction make lead hazard control highly economical. This is even more true in for the "lowest hanging fruit", like removing lead from all fuels including in lower income countries. The United Nations and the World Health Organization have been leading efforts to eliminate lead in paint since 2002. Lead abatement in the United States Lead abatement is an activity to reduce levels of lead, particularly in the home environment, generally to permanently eliminate lead-based paint hazards, in order to reduce or eliminate incidents of lead poisoning. Lead abatement may be undertaken