Description: Brand new and high quality Features: High-contrast cartridge alignment protractor provides improved visibility and eliminates tracking errors. Prevents over-steering distortion to maintain high-quality sound Turntable setup guide with instructions included, printed directly on protractor. Works with an S-shaped arm and all 1/2\" mounted cartridges. Extra magnifying glass makes it clearer when adjusting the overhang. Calibration protractor only, other accessories shown in the picture are not included! Instructions: 1. Place this protractor on your turntable platter with the hole over the spindle. 2. Move the cartridge/tonearm until the stylus rests exactly in the center of the dot's center. (120.9 mm radius). Check that the cartridge is at right angles to the outer set of grids. - If not, loosen the cartridge mounting screws and rotate the cartridge slightly until it is at right angles. 3. Move the cartridge/tonearm until the stylus rests exactly in the center of the inner dot's center (66.04 mm radius). Rotate the protractor around the spindle as needed. Check that the cartridge is at right angles to the inner set of grids. - If not, change the overhang (move the cartridge in or out along the axis) until the cartridge is at right angles. 4. Repeat steps 2 and 3 until the cartridge is at right angles at both points. Tighten the assembly and check again as above. Remove protractor. Relax and enjoy! Specification: Material: Acrylic Color: White Length: 211.5 mm/8.32 inches Width: 50.5 mm/1.98 inches Quantity: 1 pc Note: 1. Please allow 0-3 cm error due to manual measurement. Please make sure you don't mind before you bid. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package includes: 1 x Overhang Protractor