Henry David Thoreau and his father invented the graphite, which creates very readable text; This became standard in ...

An electric eraser could also be a timesaver. In the days before computer-aided drawing and the ease of the delete and undo ...

Having a tiny piece of rubber spinning at high speed gives artists and drafters a way to very precisely delete or lighten bits of their drawing ... eraser integrated into a mechanical pencil ...

This likely hints towards a new eraser feature or update in the upcoming Apple Pencil model. This new functionality could be placed at the top of the drawing stylus, much like a regular pencil.