Symbol 2812 from ISO 7000 - Title/Meaning: Very slow operation; creeper Function/description: To indicate the very slow (creeper) setting of a function or mechanism; to identify the switch or switch position by which the rate of operation is set to its very slow (creep) position.
pay attention to orientation of symbolAdditional information: 
The very slow setting may be a distinct control (for example, a separate button) or a position to which a control is moved (for example, one side of a rocker control or one end of the motion of a lever control).
Own work using: iso.org/obp/graphics/grs/5af51af4-98eb-461a-9ab3-490f70071733 200.png
Vectorization:  Mrmw