Presidium® Electronic Gemstone Gauge

Measures from 0.0 to 25.0mm. Accuracy: 0.1mm / Tolerance: 0.02mm. Direct digital millimeter/carat readout. Touch button zeroing that allows the convenience of resetting to zero at any measurement point. Smooth slider mechanism. Low battery consumption. Portable and lightweight. Attachment for high-setting jewelry provided as accessory. Presidium Gemstone Weight Estimation Table provided. Compact protective case included with auto-magnetic power off when placed in carrying case. Instantly converts millimeter readings to carats for round brilliant-cut gemstones. Measures gemstone dimensions with accuracy to 0.01mm. Clear and visible digital display with readings in mm or ct. Light and portable instrument that can be used anywhere. Made in Singapore.