Amazon.com: Baost 1Pc Professional Baby Foot Measuring Gauge Kids Shoe Sizer Infant Toddler Foot Measure Tool Shoes Size Measuring Ruler for 0-8 Years Old Use Pink
That metal thing your parents used to measure your feet? It's called a Brannock Device, and it's increasingly rare.
Amazon.com: Kids Foot Measurement Device US SIZES | Professional Foot Gauge Kids Measuring Shoe Sizer for 0-8 Years Old Use (GREEN) : Clothing, Shoes & Jewelry
Amazon.com: YVZOTCK Foot Measurement Device | Kids Foot Length Measure Gauge Shoe Sizer Measuring for Infants Kids Men Women Adults | US Standard Shoe Size : Clothing, Shoes & Jewelry
Amazon.com: UpgradeWith Foot Measuring Device | Shoe Feet Measuring Ruler Sizer for Infants Kids Men Women Adults | Perfect Measurement for All Sizes |US Standard Shoe Size : Clothing, Shoes & Jewelry