An advertising article with an automatically activated indicator assembly attached to the article including a piezoelectric sensor, a printed circuit board including a triggerable signal generator, and an LED or speaker. The driving sections are a signal selector, a write scanner and a drive scanner. The distortion in the scanned image is corrected based on the length of the circumscribed rectangle in the main scanning direction. The difference in design width can be used to identify measurement points having incorrectly measured overlay errors. In an alternate embodiment, the wands are comprised of several pieces of wand material interconnected to one another, such that the wand can be collapsed for consolidation and storage when not in use.