Symbol 5108B from IEC 60417 - Title/Meaning: Fast run; fast speed Function/description: Alternative graphical representation. Same meaning as 5108A.
Additional information: 
Published in: Supplement K, 1991;Supplement J, 1990;First edition, 1973
Own work using: iso.org/obp/graphics/grs/87157bf3-ac04-4cd7-b490-bf7daf53e82b 200.png
Vectorization:  Mrmw