Selector unit

A selector unit of a dial type, comprising:

• a panel having an opening;
• and
• a dial member that protrudes in a first direction from the opening of the panel, the dial member being configured to be rotated about a rotation axis parallel to the first direction, in a condition where the dial member is pushed in toward the panel, wherein
• a surface of the panel includes a concave surface having a depth that increases toward the opening,
• the dial member has an operation portion configured to be gripped by a user, and a base shaft portion that extends from the operation portion through the opening of the panel, the operation portion having a larger radial dimension than the base shaft portion,
• at least a part of an outer circumferential surface of the base shaft portion is an inclined surface that is inclined radially outward as being away from the panel, the inclined surface being opposed to the surface of the panel in the first direction, and
• a distance from the surface of the panel to the inclined surface of the dial member in the first direction continuously increases, as a radial distance from the opening to the inclined surface increases.