Symbol 2935 from ISO 7000 - Title/Meaning: Material (bar) loading guide, all bars in use (filled) 
Function/description: To indicate that the multiple bar feeder (material loading guide) is present and fully loaded.
Own work using: iso.org/obp/graphics/grs/e2fbe12f-948e-4b36-af62-ab39740725df 200.png
Vectorization:  Mrmw