Symbol 1725 from ISO 7000 - Title/Meaning: Bunk jaws/grab arms 
Function/description: To identify the control for operation of the bunk jaws/grab arms.
Own work using: iso.org/obp/graphics/grs/5e98ca9a-87c2-41c2-99c2-4f460649f1c5 200.png
Vectorization:  Mrmw