14K Gold Calibration Disc for Gemoro Auracle Tester

GemOro 14K Gold Calibration Disc for Gemoro Auracle AGT1 Tester. 

• 14K Yellow Gold
• Use for Gemoro Auracle, AGT1 Gold Tester  
• 6.4mm (1/4") wide

For Calibration of Gemoro Auracle Analyzer and Auracle Pro, you will require the 18k gold Calibration Disc