PRESIDIUM Diamond Meter Electronic Gemstone Gauge Gemstone Measuring Instrument Jewelry Appraisal Tool Description This is an Electronic Gemstone Gauge (Diamond Meter) made by PRESIDIUM. It is an appraisal tool that measures the size of gemstones and diamonds and allows you to check the estimated carat weight. This equipment is used in pawn shops, jewelry stores, and for appraisal purposes. [Condition] Used There are some minor scuffs, but overall it is in good condition. What is shown in the photos is everything included. [Manufacturer] PRESIDIUM Instruments Made in Singapore [Uses] ・Diamond measurement ・Gemstone size measurement ・Carat estimation Recommended as a collectible or appraisal tool.