Symbol 1948 from ISO 7000 - Title/Meaning: Add/load cassette 
Function/description: To identify the display panel indicator which signifies that the cassette is to be loaded in the device.
Own work using: iso.org/obp/graphics/grs/b356a0c7-196a-48e4-bb07-6390912670f7 200.png
Vectorization:  Mrmw