Symbol 0096 from ISO 7000 - Title/Meaning: Manual control Function/description: To identify a manually operated control. To identify the switch position that places the equipment under manual (as opposed to automatic) control. To identify the control that activates manual control. To indicate that the equipment is in manual control mode.
Additional information: 
Use as a symbol element in a combined symbol or in conjunction with a function symbol to indicate manual operating mode.
Own work using: iso.org/obp/graphics/grs/73927b16-4eea-420f-a7b0-503fbe5b738b 200.png
Vectorization:  Mrmw