An overview of some practical foot-measuring devices with videos.
Easy measurement with the RITZ Stick Foot Measure
How To Measure Feet : Nordstrom Kids’ Shoe Sizing Guide
Squatchi – A bigfoot sizer for little feet 🙂
Measures lenght and width of the child´s foot. Make sure that the child is barefoot when measuring and add some 0.4/0.5 inches to the calculated size, because that´s how much space should be left between toes & tip of the inner shoe.
Clark´s Toddler-Foot-measuring Gauge : I don´t know if this product is available in the US but it´s a great advice for measuring a toddler´s feet & calculating the proper shoe-size. Keep in mind that kidsfeet grow in intervals but fast and therefor need 0.4/0.5 inches (15mm) of space between toes & tip of inner shoe.