vintage sewing machine speed control replacement sewing machine part fits Singer

vintage Mercury Electric sewing machine knee or foot speed controller. The controller can work as foot peddle on the floor or as a knee control in a sewing machine cabinet or table. This is in very nice condition.

This is compatible with most Singer sewing machines or other makes or models of sewing machines that have a standard 2 prong plug for the machine.

The bakelite socket marked Motor is controlled by the variable speed controller and the socket marked Light is always on for your sewing lamp or work light.