For LP Vinyl Tonearm VTA Azimuth Gauge Alignment Ruler Headshell Alignment Block The simple method of adjusting the azimuth angle of the phonostage: 1. Move the cartridge to the center of the record. 2. Lower the arm so that the needle falls on the record. 3. Place the adjusting ruler right in front of the record head. 4. Watch the needle overlap with the vertical line in the center of the grid. 5. And see if the outer contour of the phono head is aligned with the grid lines. (The irregular contour of the phono head to see if it is aligned with the grid lines, the proportion is even) How to use the VTA balance of the arm: 1. Move the head to the center of the record. 2. Lower the arm so that the needle falls on the record. 3. Place the adjusting ruler on the side of the arm. 4. See if the arm is parallel to the horizontal line of the adjusting ruler. 5. If it is not parallel, you need to adjust the VTA (i.e. adjust the height of the arm). Tip: When adjusting, please note that the turntable can not be in the rotating state! Note: The product only includes the azimuthal ruler, does not include other items! Specification: Material: acrylic Size: 66*48*7.5mm Package Included: 1*Azimuth Ruler Note: 1. Please allow 1-3 mm error due to manual measurement. Please make sure you don't mind before ordering. 2. Please allow 1-3g weight error. Please make sure you don't mind before ordering. 3. Due to the lighting of the photos and the difference of monitors, the pictures may not reflect the actual color of the real item. Please make sure you don't mind before ordering, thank you!