This measurement apparatus includes measurement markers (2) disposed on the outer circumferential surface of a drum (3), a band-shaped member (10) being arranged on the outer circumferential surface of the drum (3), at least one measurement sensor (4) that acquires position information on at least a portion of the measurement markers (2), and a calculator that calculates the position of the measurement markers based on measurement information on the measurement markers (2) acquired by the measurement sensor (4) and calculates misalignment between the actual position of the measurement markers (2) measured in advance and the calculated position of the measurement markers (2).