Symbol 0848 from ISO 7000 - Title/Meaning: Half-cycle welding current 
Function/description: To identify the device on resistance welding equipment by which welding with half-cycle welding current is possible.
Own work using: iso.org/obp/graphics/grs/bb70eb61-2ac4-49e5-bfe1-4f573d53e4bf 200.png
Vectorization:  Mrmw