Symbol 3669 from ISO 7000 - Title/Meaning: Engine load, per cent of rated torque 
Function/description: To identify the control that sets the operating engine load as a percentage of rated engine torque. To indicate the actual load on the engine as a percentage of engine rated torque.
Own work using: iso.org/obp/graphics/grs/f977d7d8-fd8b-49f0-b52e-2c7d7f107968 200.png
Vectorization:  Mrmw