Technical pencil B4 ribbed

The technical pencil completes the family of writing instruments B4. Likewise, the writing instrument connects to the cap with a metal insert, in which there is an accurate rotating mechanism for extending the graphite lead outward (turning to the right). If we remove the cap from the pen, there is an eraser built into the top of the mechanism. In the metal insert, there are 0.7 mm graphite leads for writing and drawing.

"We replace the cartridge by pulling off the cap from the pen, unscrewing the mechanism, inserting a new cartridge, screwing the mechanism back on, and putting the cap back on the pen. Like a ballpoint pen, the technical pen is also heavy enough to provide a good feel and balance compared to plastic pens."