Eisco Rheostats

<P>Useful for a variety of laboratory demonstrations, these rheostats provide a variable resistance in electrical circuits.</P><P>Oxidized constantan wire is wound on a vitreous enamelled tube. A sliding contact carriage, mounted on the slide bar, carries a phosphor bronze contact for long life. The rheostats have three binding posts with 4mm sockets for electrical connections: one at each end of the winding and another at the end of the slide bar.</P>