Symbol 5517B from IEC 60417 - Title/Meaning: Multi-picture display Function/description: Alternative graphical representation. Same meaning as 5517A.
Additional information: 
Published in: 3C/1361/CDV,3C/1417/RVC
Own work using: iso.org/obp/graphics/grs/8e772d2b-2163-4fee-aaec-dd10b1b99dba 200.png
Vectorization:  Mrmw