Item Type: Turntable Alignment Protractor Material: Acrylic Size: Approx. 190 x 40 x 2mm / 7.5 x 1.6 x 0.1in Package List 1 x Turntable Protractor 1High Accuracy: High contrast cartridge alignment protractor provides better visibility and eliminates tracking errors, and ensuring efficient operation. 2Excellent Sound: This protractor can help eliminate tracking errors, adjust overhang, and avoid overshoot distortion to maintain excellent sound. 3Perfect Fit: This phonograph turntable protractor is suitable for 1/2 inch mounting cartridge, and can be used in conjunction with S shape arm. 4Acrylic Material: The player turntable protractor is made of excellent acrylic material, with good toughness, impact resistance, and scratch resistance. 5Easy Operation: This alignment tool has a simple structure, only needs to link the protractor tool to the turntable setting guide, making it easy to operate.