The 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 that lists the S.G. value, R.I. value, and hardness measurements of 133 common gemstones in the market for handy reference. Key features include: measures up to 25.0 mm with .01mm accuracy, calculates estimated weights for 74 gemstones in 9 different shapes, direct reading of estimated weight for round brilliant-cut diamonds, computer interface display with USB connectivity
Measuring range from 0.01 to 25mm. Computer connectivity possible and it includes specific gravity set dictionary for quick reference.