"Pencil markings" refers to the lines or drawings made on a surface using a pencil.
Sentences with «pencil markings»
The softness of her palette gives her work a drawing - like quality, which is emphasized further by pencil marks and other left - over traces of the working process. (galeriethomasschulte.de)
One of my earliest questions was about why it is harder to erase old pencil marks than new pencil ones. (newscientist.com)
Using a template allows for adjustments without adding anymore pencil markings onto the frame. (mypinterventures.com)