Symbol 6339-1 from IEC 60417 - Title/Meaning: Finger/hand placement, index finger of right hand Function/description: To indicate that the system requests the index finger of the right hand to be placed on the platen.[]A mirrored graphical symbol may be used to indicate that the system requests the index finger of the left hand to be placed on the platen.
Additional information: 
The meaning of this graphical symbol depends on its orientation.
See also IEC 60417-6339-2, IEC 60417-6339-3, IEC 60417-6340-1 and IEC 6340-2.
Own work using: iso.org/obp/graphics/grs/2f52bec4-5ab0-4dc7-a74d-5952cfe1388a 200.png
Vectorization:  Mrmw