The Presidium Gem Computer Gauge uses an altogether different method for measuring specific gravity.
In lieu of the hydrostatic method common to our other devices, where the gem or mineral must be weighed in water, the Gemstone Estimator feature of this tool directly measures the volume of a cut gemstone, and divides that into the weight of the stone to derive specific gravity.
The Gem Computer Gauge first prompts the user to select the type of cut among the following choices:
Then with the precision calipers, the user measures the length and width, or diameter, along with the depth of the stone. You are then prompted to enter the weight of the stone. The Gem Computer Gauge then computes the volume using internal formulas for the particular geometric shapes. Once the SG is computed, the Gem Computer Gauge retrieves matching gemstones from its internal database!
GEMSTONES & SHAPES
Retrieve the specific gravity of specific gemstone directly from the
S.G dictionary by just entering the name of the stone.
1 year factory warranty
Length - 3.8" x Width - 2.4" x Thickness - .63"
This product typically ships within 1 business day.
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