Symbol 5713 from IEC 60417 - Title/Meaning: Variation of scan depth Function/description: To identify the control or the indicator to select the scan depth, for example on diagnostic ultrasound equipment.
Additional information: 
Published in: Amendment 2, 2002,3C/473/FDIS,62A/228/CDV
Own work using: iso.org/obp/graphics/grs/d1e3e247-d56f-47eb-baec-68d566cd2169 200.png
Vectorization:  Mrmw