A dimension measurement device includes: a storage receptacle; an imager configured to capture an image of a measurement object to be stored in the storage receptacle; and an image processor configured to process the image captured by the imager. The storage receptacle includes: a rectangular lower surface; a rectangular first side surface; a rectangular second side surface; a first concave corner formed by the lower surface and the first side surface; a second concave corner formed by the lower surface and the second side surface; a third concave corner formed by the first side surface and the second side surface; and a reference corner point formed at an intersection between the first concave corner, the second concave corner, and the third concave corner. The storage receptacle further includes markers indicating locations of respective sides of the first side surface, the second side surface, and the lower surface.