Symbol 5067 from IEC 60417 - Title/Meaning: Picture size adjustment Function/description: To identify the picture size control.
Additional information: 
Published in: First edition, 1973
Own work using: iso.org/obp/graphics/grs/47eaf33e-75a1-42c5-88f1-f4a919f087e9 200.png
Vectorization:  Mrmw