To provide a hinge such that it can be confirmed from outside that a pivot shaft is suitably fitted to a bearing even after construction work is completed.

A hinge 2 including a hinge body 10 which is fitted to one of a door D and a door frame 5 on the periphery of the door and has a pivot shaft 17 capable of moving an axial direction, and a second hinge 3 which is fitted to the other of the door D and the door frame 5 and has a bearing 7 or a bearing 83 receiving the pivot shaft 17 rotatably includes notification means connected to a switch SW provided to the hinge body 10 or the second hinge 3. When the pivot shaft 17 is suitably fitted to the bearing 7 or the bearing 83, the switch SW operates to give notice of the state by the notification means.