Handy helper for work - the carpenter's pencil. This flat pencil perfect for carrying behind the ear is called carpenter's pencil, producing by the PALOMIN BLACKWING 602 from America.
The sharpened lead has 2 dimensions: the thin side for line drawing and the thick side for marking on any rough surface like concrete or stone.
The carpenter's pencil has stronger and easy to erase lead for outdoor work, and earns its name by the commonly use of architect and contractor, but also starting to be used for sketching.
The lead can be sharpened by cutter.