This a Geometric-Sequence Multi-Notch Applicator, designed for rapid visual hiding power measurements. It conforms with ASTM Method D 5007, Wet-to-Dry Hiding Change. In this standard, the hiding power of the wet film and then of the dry film are observed visually, and the percentage increase or decrease is reported. Leneta Form 23B Chart is designed specifically to compliment Item TG-19.