Top & Bottom thicknesser planning machine.
It is used to trim boards to a consistent thickness throughout their length and flat on both surfaces.
It is different from a surface planer, or jointer, where the cutter head is set into the bed surface. A surface planer has slight advantages for producing the first flat surface and may be able to do so in a single pass.
High quality two sided 4 cutter planer, double side wood planer thickness for woodworking.