Symbol 6230 from IEC 60417 - Title/Meaning: Scanned image, centring Function/description: To identify the control to align the image at the centre position of copying paper/material.
Additional information: 
See also the symbol ISO 7000-0661.
Own work using: iso.org/obp/graphics/grs/7390ecdc-c731-4447-8e92-c57b22e6fc96 200.png
Vectorization:  Mrmw