COIL HOLDING APPARATUS

A coil holding apparatus for laying a concentrated wound cassette coil in which a wire is laminated in multi layers, including a plurality of supporting parts configured to support the concentrated wound cassette coil, in which the plurality of the supporting parts include a first supporting part having a first height in the vertical direction and a second supporting part having a second height different from the first height in the vertical direction. The concentrated wound cassette coil includes an upper surface and a lower surface, each of the plurality of the supporting parts includes a supporting surface that is brought into contact with the lower surface and that supports the concentrated wound cassette coil.