Abstract: Methods and systems for measuring a component of a drug delivery or storage device are described. The method comprises providing a light source in an opposing relationship with an optical imaging sensor; positioning a sample component on a positioning stage located between the at least one light source and at least one opposing optical imaging sensor; and illuminating, with the at least one light source, the sample component. The controller is operable to capture an image of the component, determine the location of a first outer edge point PI of the captured image; rotate the sample component relative to the optical image sensor, and collect n images separated from each other by x degrees of rotation, wherein n*x is ?360 degrees. The controller may compare a measured position of the at least one outer edge point PI between the captured images to determine a degree or circular runout.