Here are some 19" rack panels symbols. They are in quarter scale.
Parallax's Board of Education (Serial) symbol.
These batteries symbols go with my PCB symbols.
A symbol for Parallax's BS2 Homework Board.
These are the PLC micro chassis: DL06. The symbols are similar, but each has a different silkscreen.
A stencil for systemic structural constellations in coaching or family therapy.
Tracage de Schéma unifilaire
Librería para hacer diagramas eléctricos de sistemas de generación eólica.
U=RI and Co