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Shape 5-Point Star (sides slightly bowed outward) Factory Number SP 474 Number of Holes 31 Largest Hole 12 mm × 12 mm Smallest Hole 9 mm × 9 mm Material Hardened steel Origin Italy Compatible Metals Gold
Top work surface features sharp corners for precise metalworking
and appropriate casting temperatures
Four pegs can be positioned in any of the many holes on the top of the jaws
The terms Extra Easy
Refractometer Prop 65 - Lead Shape 5-Point Star (sides slightlyThe GemPro refractometer is a primary gemological instrument used to measure the refractive index of gemstones for accurate identification. Clear optics and an easy viewing lens make readings straightforward, helping you quickly determine one of a stones most critical optical properties. Features Measures refractive index for gemstone identification Easy viewing lens for clear scale observation Designed for professional gemological use Compact
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