Symbol 0023 from ISO 7000 - Title/Meaning: Disengaging; mechanical deactivation Function/description: To identify the control or the indicator for the disengagement of two machine parts or elements, or for the disabling of a mechanical drive.
Additional information: 
Symbols may be rotated 90° for a clearer visual representation.
Own work using: iso.org/obp/graphics/grs/2755e2f2-3019-4ac5-aea6-d1d6411385eb 200.png
Vectorization:  Mrmw