A pantograph is a device that collects electric current from overhead lines for electric trains or trams. The term stems from the resemblance to pantograph devices for copying writing and drawings.
The diamond-shaped pantograph of the Swiss cogwheel loco in Schynige Platte
, built in 1911.
The (asymmetrical) 'Z'-shaped pantograph of the electrical pickup on the Berlin Straßenbahn
. This pantograph is single-arm.
Pantographs easily adapt to various heights of the overhead wires by partly folding. The tram line pictured here ran in Vienna
Symmetrical, diamond shaped pantographs on trams