Pen-Probe for Auracle ANALYZER and Auracle PRO gold Testers Discounts apply not high enough for teapots

not high enough for teapots and trays) - altogether the most versatile

once louope with 5 lenses on top of each

2 inches) X 25mm

It measures refractive index (to what extent light is bent as it passes through the gemstone)

Pen-Probe for Auracle ANALYZER and Auracle PRO gold Testers Discounts apply not high enough for teapotsSummary Replacement pen probe for electronic gold tester. Please take care to order the correct pen probe, this one has a gold sticker and is for: Auracle Analyzer Auracle PRO. With light use, how long should a pen probe last? The manufacturers say it should be replaced after a year but if it's still giving correct readings (check against your calibration sample or any hallmarked gold) then it's fine, no matter how old it is. They do, however, dry up