Product Description: This is a metal ring gauge made by TOP (Top Kogyo) that allows you to accurately measure ring sizes. It's an essential tool when purchasing rings online or choosing a gift. Made of metal, it allows for measurement with a feel similar to an actual ring. ● Standard: National Standard Ring Size (Japanese size) ● Measurement Range: Size 1 to 28 (all sizes available) ● Brand: TOP ● Condition: Please see the photos. The ring opens and closes smoothly, and there is no noticeable rust. Immediate purchase is welcome. Thank you.