Symbol 3666 from ISO 7000 - Title/Meaning: Animal weighing Function/description: To indicate the animal weighing device. To identify the control for weighing of animals. To indicate that animals are being weighed.
Additional information: 
This device might mostly be used for farmers and butchers because it symbolises that only the weight or mass of animals are supposed to be measured.
Own work using: iso.org/obp/graphics/grs/d5dc8e3c-ece5-4310-981f-d6841d7457c8 200.png
Vectorization:  Mrmw