Flange Measuring Tool for Nipple: The nipple measuring tool help to measure the nipple diameter and get the proper size flange that can work perfectly with your breastfeeding , solve new mom problems. Wide Diameter: The nipple ruler measuring card with 27 size that can meet various diameter sizing requirements, for great use of nipple size changes. Selected The flange measuring tool use food grade & wear resistant plastics, and accuracy , safe to use for delicate skin. Increase Your Breastmilk Production: The nipple ruler assist you to get the right size nipple diameter and find the proper flange, promote better breast milk and output under the correct flange size Simple to Use: The nipple measuring ruler which easy to use, simple hold the ruler with of your side nipple, use record the correspond scale, please make sure comfortably fit your nipples without forcing-it then to get the proper measuring size