Symbol 5491 from IEC 60417 - Title/Meaning: Enlargement of the cooking zone, eccentric Function/description: To identify an indicating or control element for the eccentric enlargement of a round cooking zone.
Additional information: 
Published in: Supplement O, 1996,3C/295/DIS
Own work using: iso.org/obp/graphics/grs/8e631e70-dafd-4446-9575-ec096b95dfac 200.png
Vectorization:  Mrmw