Presidium Instruments Gem Tester II (PGT II) w/ Assisted Thermal Calibration (ATC) INCLUDED ASSISTED THERMAL CALIBRATION | Now easily self calibrate your device to your testing environmentINDUSTRIES MOST TRUSTED | Gemstone tester redesigned to be more compact, sturdy and portableTHINNEST RETRACTABLE PROBE TIP I PGT II features the industry’s thinnest retractable probe tipVERSATILE AND RELIABLE | Consistent and reliable results every time. Identifies diamonds/moissanitesSIMPLE & EASY TO USE | Clear and easy-to-read analog dial; Can differentiate 16 types of gemstones AN INDUSTRY LEADER The Presidium Gem Tester II is based on the invention of Professor Julian Goldsmid from the University of New South Wales in Australia. It was developed to distinguish between diamonds and its other simulants using the principles of thermal conductivity. The Presidium Gem Tester II with Assisted Thermal Calibration provides a quick and easy way to identify diamonds/moissanites and separates up to 16 common colored gemstones based on their thermal conductivity with its clear and direct analog display. NEW INCLUDED CALIBRATION FEATURE As PGT II works on the thermal conductivity of the gemstone, its measurement will be affected by the testing environment. WIth the improved function of Assisted Thermal Calibration (ATC), the user is now able to easily calibrate the tester according to the testing environment for a reliable and consistent reading. The Presidium Gem Tester II Features:Retractable thermoelectric probe tip that ensures constant pressure between probe tip and gemstoneIndustry's thinnest probe tip (0.6mm) for testing diamonds as small as 0.02ctMetal alert buzzer to ensure that probe tip is in contact with gemstone during testingClear and easy-to-read analog dialNo waiting time between testsBuilt-in Calibration (CAL) and Glass test discs for referencePowered by 2 x AA batteries or adaptor Included in Your PackagePresidium Gem Tester IIRetractable probe penBuilt-in Calibration (CAL) and Glass test discsAC adaptorUser handbookWarranty cardProtective carrying case Item model number PGT-II Part Number PGT/CSE Batteries Required? No Item Package Quantity 1 Color Black Product Dimensions 7.8 x 4.5 x 3.8 inches Material Other Item Weight 1.15 pounds Batteries 2 AA batteries required. Batteries Included? No Description Pile AA Manufacturer Presidium Is Discontinued By Manufacturer Yes Size Medium Shipping Fast shipping is very important for us. Our standard US shipping service is FREE. Your order will be shipped within 2-3 business days upon full payment received. Your order will be delivered within 2-3 business days after the handling time. We only ship to the confirmed PayPal address. We reserve the right to cancel any order for any reason at any time. We are not responsible for undeliverable addresses. Returns and payment We offer a 30 days return policy from checkout winning date. We allow only PayPal as payment methodFeedBack Your feedback very important to us, after you get your package and you are satisfied with our service please leave us positive feedback If you have any problem with your order / any questions please before leave any type of feedback For any questions, using eBay contact system Please visit our eBay store to check out other items for sale!Thank you for shopping at our store.