Usage Tips:For Professional Collector's: The Coin Acoustic Verifier generates pristine resonant frequencies for advanced coin authentication. Paired with precision calipers measuring diameter against certified standards, this system validates specimens from 1/10ozt fractional coins to substantial 10ozt pieces with laboratory-grade accuracy. Coin Tester Kit: A comprehensive toolset designed for authenticating silver and gold coins through advanced resonance testing. This versatile kit is compatible with leading verification systems including Precious Coin Tester, Pingcoin, and Coin Tester platforms. Perfect for collectors and dealers, it provides reliable multi-factor authentication to your coin's ness. For comprehensive coin authentication: Secure your silver coin in the included holder for precise resonance analysis-the sound profile reveals key authenticity markers. Use the magnetic clasp to test metallic composition; silver exhibits minimal magnetic response. System Integration: This tester interfaces with leading numismatic analysis applications including for Precious Coin Tester, Pingcoin, Bullion Test, and Coin Tester platforms, enabling advanced analysis and automated reporting features for comprehensive authentication documentation. Metal Acoustic Tester - A portable authentication solution for gold and silver coins. Simply secure your coin in the testing chamber and release for instant analysis. The compact 4Inch x 5Inch carrying case fits in any pocket, making professional-grade verification available anywhere. Color:As Shown Material:Metal Package Contents: 1set * gold testing kit Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.