Jewelry (Inside) Dia. Size Gauge

Jewelry (Inside) Dia. Size Gauge is a portable tools for jewelry shop owners or makers for getting an estimate of the mm size/carat of the diamond or gems to be used in an empty ring hole or other jewelry items. 

Just insert the tip of the gauge in the ring. The one that fits will be the size/pointer of the diamond to be used with the ring.

Features :

• Very Easy to use and good for getting a quick reference or comparison of the sizes
• Built from strong metal to last long
• Comes in a keychain shape so that you can carry it easity just like your normal keychain
• Every size is tested or meet industry standards
• Minimum Range is 1 mm (0.01 carats) and max up to 6.5 mm (1.00 carats)