Symbol 5707 from IEC 60417 - Title/Meaning: Pencil probe Function/description: To identify the control or the indicator to activate a pencil probe for Doppler mode and to identify the corresponding connector.
Additional information: 
Published in: Amendment 2, 2002,3C/452/FDIS,62A/228/CDV
Own work using: iso.org/obp/graphics/grs/6f75c1ae-be1a-4fc6-a453-d3362881adbd 200.png
Vectorization:  Mrmw