Sewing machine

A sewing machine comprising:

• a bed portion;
• a pillar extending upward from the bed portion;
• an arm portion extending from an upper end portion of the pillar in parallel with the bed portion;
• a cover provided on the arm portion and configured to be rotatable between a closed position and an open position, the closed position being a position in which a base surface, which is a part of a surface of the cover, faces an upper side of the arm portion and the base surface covers the upper side of the arm portion, and the open position being a position in which the base surface, is directed upward and the base surface does not cover the upper side of the arm portion at all;
• and
• a thread spool device provided on the base surface and including at least one thread spool pin, the thread spool device being capable of holding a thread spool on each of the at least one thread spool pin in a state in which the cover is disposed in the open position.