AuRACLE 18k Yellow Plumb Calibration Round Hoke Torches ranging in diameter from 0

ranging in diameter from 0

Bezel mandrel format for shape-specific forming work

Rated to 160 PSI

Buffing – dust

or signs of wear

AuRACLE 18k Yellow Plumb Calibration Round Hoke Torches ranging in diameter from 0The AuRACLE 18K Yellow Plumb Gold Calibration Round is a precision calibration disc designed specifically for use with the AuRACLE gold tester. Proper calibration is essential for accurate karat readings, and GemOro recommends using an 18K yellow plumb gold sample as the calibration standard. This disc meets that specification exactly, ensuring your AuRACLE tester performs to its full accuracy potential. Plumb gold refers to gold that is guaranteed to