Easy Read Measurements
The Original Sock Ruler measures adult sizes and a child's size large. They are made from flexible, durable plastic that provides easy-to-read measurement markings. Using a traditional tape measure, measurements can be inaccurate as the fabric is stretched to lie flat. With the Sock Ruler, the material lies flat because the ruler is placed inside the sock for accurate measurement. Please remember that this ruler does not measure the foot's actual length. Instead, it provides measurement markings for when you should start the heel turn and toe decreases.