【Multi Dimensional Verification】Changes tester kit is equipped with a magnetic detector to quickly identify metal properties (pure silver usually shows weak magnetic response) . Combined with a professional magnifying glass , it is easy to observe changes surface oxidation marks , repair traces and tiny defects , achieving multi dimensional verification 【Full Set Of Accessories】Portable changes tester set includes all core tools and auxiliary accessories : 1 changes tapping tester with retractable lanyard hook , 1 wooden hammer , 1 magnifying glass , 1 magnetic detector , 1 pair of cotton gloves , 1 cleaning cloth , 4 spare protective sleeves and 1 portable storage bag 【Professional Acoustic Resonance Detection】Changes ping tester kit supports all range silver changes and gold changes from 1/10 oz to 10 oz , accurately covering mainstream precious metal changes specifications . Adopting professional ping resonance testing technology , paired with wooden hammer tapping , it analyzes unique frequency and timbre to accurately identify changes density and structure , efficiently assisting in authenticity identification 【Compatible With Mainstream Analysis Applications】Pocket pinger tester tool is perfectly compatible with mainstream changes analysis application . Resonance sound waves , size and other data collected by the device can assist the analysis application in completing advanced spectral analysis and automatically generate identification reports , providing professional and authoritative identification support for collectors and dealers 【Portable And Easy To Store】All accessories are uniformly stored in a storage bag , which can be easily put into a pocket for professional identification anytime and anywhere . Equipped with silicone spare protective sleeves , cotton gloves and cleaning cloth , it effectively stops changes from being stained with fingerprints and scratched , protecting changes in all aspects, Manufacturer: Zhjiutak