Features: Everything you need to set up your turntable. Get the absolute best out of your equipment and hear your music exactly as it was meant to be heard. These tools will enable you to set your vertical tracking force, headshell alignment and vertical tracking angle (VTA) so that you records sing like never before. Includes a alignment protractor, azimuth, tonearm force gauge scales and a spirit level.You need to prepare two pieces of ag12 button cell by yourself. Correct stylus force is important for ensuring accurate playback and extending the life of your valuable records and cartridge. Specifications: Material:Vinyl Weight:156g Package Includes: 1 Set Turntable Tools note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.