Symbol 5145 from IEC 60417 - Title/Meaning: Variable range marker Function/description: To identify the variable range marker control.
Additional information: 
Published in: Supplement A, 1974
Own work using: iso.org/obp/graphics/grs/ac05b369-30cb-466a-88ce-b638ef99913c 200.png
Vectorization:  Mrmw