Presidium Gem Computer Gauge A convenient digital gauge that measures actual gemstone dimensions and estimates gemstone weight and identity. Presidium Gem computer Gauge measures the dimensions and estimates the weight of loose and mounted gemstones with precision, speed, and ease. after entering the weight and the measurements of a gemstone, PGCG narrows its identity by computing its S.G. value. With PGCG's computer interfacing, gemstone measurement records can be easily imported and printed. PGCG also comes with a CD-Rom that lists the S.G. value, R.I. value, and hardness measurements of 133 common gemstones in the market for handy refernece. Features Measures from 0.0 to 25.0mm Accuracy: 0.01mm / Tolerance: 0.02mm Digital mm/ct display Automatically shut-off when ideal for 10 minutes Auto-magnetic shut-off when placed in carrying case Computer interface display with CD and USB (universal Serial Bus) Connectivity Attachment for high setting jewellery provided Specific Gravity (S.G.) dictionary for quick and easy reference included CD-ROM containing information on 133 gemstones (e.g., S.G. value, R.I. value and hardness) included Dimensions and Weight length: 97mm (3.82 inches) Width: 61mm (2.4 inches) Height: 16mm (0.63 inches) Weight: 120g (without battery) Benefits measures actual gemstone dimensions and estimates gemstone weight and identity measures 74 gemstones and 9 different shapes Accurate measurement to 0.01mm Direct carat conversion for round brilliant-cut diamonds Clear and visible display for ease of reading measurements Light and portable instrument that can be used anywhere PC connectivity for ease of importing and printing measurment results Power and battery 1 x CR-2450 3V battery (about 80 hours of continuous use) Measurement range 0.00mm to 25.00mm or 0.000ct to 57.343ct* (based on round brilliant cut) Package contents Presidium Gemstone Computer Gauge CR-2450 3V battery High setting jewellery attachment Mini CD-ROM USB cable User handbook Warranty card Protective box
