Reusable Plastic Gauge Finger Sizer

This plastic finger sizer works like a belt—simply insert the end to form a ring shape and slide it onto your finger. Adjust it so it fits comfortably and can pass over your knuckles easily. Once you find the right fit, read the size shown on the gauge. It can be used repeatedly. Note that the gauge is 5mm wide; if your ring is wider, avoid tightening the gauge too much, as wider bands will feel tighter. For best results, measure your finger at the end of the day and remember that finger size can change with temperature and humidity throughout the year.