Calibration discs for Gemtest-PGI Magnifier Style_Reader (handheld) ) usually register as Moissanite

) usually register as Moissanite

10X12 - 10X13 - 10X14 - 10X20* - 10X21 - 10X21 - 10X23 - "30X21”

Battery included

•    Power Off: hold the power/zoom button for four seconds then wait two seconds for it to turn off

Calibration discs for Gemtest-PGI Magnifier Style_Reader (handheld) ) usually register as MoissaniteDetails Spare calibration discs for GEMTEST PGI. The Gemtest PGI must be calibrated regularly to ensure it is working properly, especially if the temperature changes. This is not difficult: you place the probe on of the circles and press a button, then place it on the other circle and press a button. The only problem is: if you've lost the calibration discs.