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Features: It is a useful calibration distance gauge tool to adjust the vinyl records. Made of acrylic material, durable, firm and nonslip. Light and accurate, it can bring a good and wonderful calibration effect. Side A is used to test the skidding force of stylus, Side B is used to calibrate the head. Easy to use, one sided alignment mat provides a diagram for alignment. Specifications: Item Type: Pickup Calibration Material: Acrylic Size:  Diameter: About 29.5cm Thickness: About 0.2cm Color: White Quantity: 1 Pc Package includes: 1 x Pickup Calibration Notes:  Transition: 1cm=10mm=0.39inch  1. Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you!  2. Please allow 1-3cm measuring deviation due to manual measurement. #Turntable #Protractor #Adjustment #Tool #Calibration #Plate #Accessories #Mat #Pickup #Ruler #Stylus #HIFI #Phono