A tape having a strip shape extending in a lengthwise direction and a widthwise direction includes: a subject surface located on the tape and exposed in a thickness direction; a first marker provided on the subject surface and being greater than the subject surface in reflectivity to light with a particular wavelength; and a second marker provided on the subject surface and being less than the subject surface in the reflectivity. At least a portion of the first marker and at least a portion of the second marker are identical to each other in position in the widthwise direction. At least a portion of one of the first marker and the second marker and at least a portion of another of the first marker and the second marker are different from each other in position in the lengthwise direction.