HP-901 includes all hydraulics/pneumatics symbols according to DIN/ISO 1219 standards. This magnetic set provides a quick method of drawing hydraulic/pneumatics circuits on a magnetic white board for the step-by-step development of circuit diagrams.

The symbols are made of waterproof materials and adhere to a metal-backed board. Connections and designations are marked with the whiteboard marker. This symbol set is very useful to explain experimental pneumatics circuits to a classroom of students.