Device and method for measuring rod-like item, and device and method for manufacturing rod-like device

A rod-shaped-article measurement device that is a measurement device for measuring an outer circumference of a rod-shaped article in a wrapping section of the rod-shaped article,

• wherein the wrapping section includes a wrapping-paper supply unit and a wrapping unit, the wrapping-paper supply unit supplying continuous wrapping paper toward a component of the rod-shaped article, the wrapping unit wrapping the component with the wrapping paper supplied from the wrapping-paper supply unit to form the rod-shaped article, and
• wherein the measurement device comprises:
• a first measurement unit that measures a paper width of the wrapping paper in a width direction crossing a longitudinal direction of the wrapping paper in the wrapping-paper supply unit;
• a second measurement unit that measures an overlapping width of an overlapping portion in which portions of the wrapping paper overlap in a circumferential direction of the rod-shaped article transported from the wrapping unit;
• and
• a calculation unit that calculates the outer circumference based on a width difference obtained by subtracting the overlapping width measured by the second measurement unit from the paper width measured by the first measurement unit.