Symbol 2872 from ISO 7000 - Title/Meaning: Axle lock, on or available Function/description: To identify the control used to activate the axle lock function. To indicate that the axle lock function is either activated (engaged/on) or is available.
pay attention to orientation of symbolAdditional information: 
This symbol uses the axle shown in ISO 7000-2439.
Own work using: iso.org/obp/graphics/grs/e7d81992-1c61-4d64-9bbe-9a48db284e45 200.png
Vectorization:  Mrmw