Over the past few years, their research group has been investigating the potential use of pencil lead, one of the simplest ...

The second factor to consider is material. Pencil cases can be made from a variety of materials, including fabric, leather, and plastic. The material you choose will depend on your personal ...

This round-up of high-end mechanical pencils has an emphasis on long-lasting materials, beautiful craftsmanship, and refined design, allowing you to click to sketch for many years to come. The ...