Large Gold Test Stone Natural Stone - 6" x 4" Adhesives (4) AA batteries

(4) AA batteries

Compared to the standard ENK-410S motor (EMX8086)

Highly polished surface for smooth

5mm) 2B-66 Platinum

Rated to 100 PSI — protects boiler from dangerous overpressure conditions

Large Gold Test Stone Natural Stone - 6" x 4" Adhesives (4) AA batteriesThe Large Gold Test Stone from Eurotool is a natural stone cut to a generous 6" x 4" size, ideal for professional gold testing in a jeweler's bench or assay station. Gold test stonesalso known as touchstonesare used to assess the karat or purity of gold alloys by observing the streak left when metal is rubbed across the stone's fine grained surface. The larger format of this stone provides ample working area, allowing multiple test streaks to be