A. Features: 1. High contrast cartridge alignment protractor provides improved visibility and helps reduce tracking errors. 2. Helps avoid over-shoot distortion to maintain sound quality. 3. Compatible with S-shaped arms and any 1/2" mounted cartridge. 4. Includes an extra magnifier for clearer overhang adjustment. B. Specification: This is a tonearm and cartridge stylus adjustment tool for record players, designed to be simple and practical. It features a clear scale, light weight, and is not easy to break. C. Specifications: Main color: white; Main material: acrylic; Item size: 190 * 40 * 2mm / 7.5 * 1.6 * 0.1in; Item weight: 20g / 0.7ounce; Package size: 190 * 40 * 10mm / 7.5 * 1.6 * 0.4in; Package weight: 22g / 0.8ounce. D. Packing List: 1 * Calibration Protractor (Note: Other accessories shown in the picture are not included.)