Symbol 5187 from IEC 60417 - Title/Meaning: Teacher; supervisor Function/description: To identify the controls related to the functions of a teacher or of a supervisor.
Additional information: 
Application, for example, in language laboratories: student calls teacher
Published in: Supplement F, 1982
Own work using: iso.org/obp/graphics/grs/3e41fa68-e45e-4add-93ab-c5f48b76e5b2 200.png
Vectorization:  Mrmw