ScalemarqTM is a combination marker and AFBO scale in a single, easy-to-use tool. It provides a 4mm long measurement scale, grayscale plate, black and white plate, and a 1.9mm copper disc, conveniently the size of a penny, for comparison, image sizing, and validation. Each bag contains 10 markers. Larger quantities are available. 2.5cm x 7.14cm.