MS-632 PVG REVERSING KEY

For use in circuits where a rapid change over of polarity required,
consist of a pivoted bar of ebonite fitted with brass contacts on
spring loaded pivot, connected to two socket terminals. Arranged
in such a way that when the bar turned from one extreme to the
other, the polarity of the connections is reversed. Dimension 100 x
65 x 50 mm. high.
Also available fitted on round base.