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. 1 x Turntable Protractor