Patent attributes
A timepiece includes: a casing; a light transmission part; a function part; and a glue adhering the light transmission part to the casing. The casing includes: a projection projecting from an inner circumferential surface and extending along a circumferential direction; and a protrusion protruding from the inner circumferential surface and determining a position of the light transmission part. A lateral surface of the light transmission part is adhered to the inner circumferential surface. A peripheral part of a bottom surface of the light transmission part is adhered to a top surface of the projection. An outer circumferential surface of the function part extends along an inner surface of the projection. A space is present in a facing region where the projection faces the function part along the light transmission part. The space is wider in a specific section including the protrusion than in a section different from the specific section.
