Abstract: An inspection device for a cylindrical body, a bundle of cylindrical bodies having improved straightness, and methods of inspecting are provided. The inspection device includes a transport device, a rotation device, and a measuring device. The transport device moves the cylindrical body relative to the measuring device. The rotation device and the transport device rotate the cylindrical body while the cylindrical body is moving relative to the measuring device. The measuring device measures the cylindrical body while the cylindrical body is moving relative to the measuring device and while the cylindrical body is rotating.

Abstract: A bundle includes five or more circular elongated elements. Each circular elongated element includes: a first end; a cylindrical portion defining an outer diameter of the circular elongated element and a rotation axis of the circular elongated element; and a second end. The first end and/or the second end of each circular elongated element fulfills at least one of the following equations: ARO?A or ARO/OD?B, where value A is 1.3 mm, ARO is an axial run out in mm of the first end and/or the second end of the respective circular elongated element, value B in mm/mm is 0.1, and OD is the outer diameter in mm of the respective circular elongated element.

Abstract: An inspection device for a cylindrical body, a bundle of cylindrical bodies having improved straightness, and methods of inspecting are provided. The inspection device includes a transport device, a rotation device, and a measuring device. The transport device moves the cylindrical body relative to the measuring device. The rotation device and the transport device rotate the cylindrical body while the cylindrical body is moving relative to the measuring device. The measuring device measures the cylindrical body while the cylindrical body is moving relative to the measuring device and while the cylindrical body is rotating.