vintage Mercury sewing machine foot or knee control, replacement part fits Singer

1930s 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 controller is in nice working condition, but we did see a small spot of checking to the insulation on the cord about 4" on the wall side of the bakelite socket.

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.