Symbol 3778 from ISO 7000 - Title/Meaning: Inkjet printhead height 
Function/description: To indicate control of the height positioning of the inkjet printhead.
Own work using: iso.org/obp/graphics/grs/3501cb4b-9f84-47f4-9a07-af90ce0d962d 200.png
Vectorization:  Mrmw