This Ring Sizing Measuring Tool is portable and lightweight as well. It is also quite durable which should make it last for a very long time. 
It also comes with another small ring measuring tool made of plastic so you can carry it with you right in your pocket. 
Additionally, it also includes a small microfiber cloth to keep the tool nice and clean. 
Overall, would highly recommend this tool whether you own a jewelry store or you simply want to have one at home to test on yourself or others!

Product Description:
100% brand new and high quality. 
Metal finger gauge for measuring ring sizes
US sizes: 0-13 with measurement marked on each ring sizer.
Measure your ring size correctly.
Fitting wedding rings, class rings, fashion ring, etc

Package Includes: 
Ring Sizer  x 1
Finger Sizing Belt  x 1
Jewelry Polishing Cloth x 1
Ring Sizer Tool - US size(0-13), come in Half sizes, no quarter sizes，Package 1 X Ring sizer guage, 1 x Plastic ring sizer belt. Recommends the physical ring sizer as the most accurate method for determining ring sizing kit.
Easy to Separate - The sizes are stamped on the stem of each ring and come on a flexible cable with a screw connection for you to open if needed sizing rings.
Ring Measurement Tool - Made of stainless Iron material durable and ensures long term application without rusting.
Knowing The Ring Size Was Always a Problem - With time, one put on weight or loose weight so it's always better to keep a ring measure for fingers with you.
For Other First-time Ring Wearers - Metal ring sizer finder will size rings for that type of ring only. For classic ring fits (flat on inside), you need to get a set of ring sizers that are completely flat on the inside.