60*12 mm Circular Bubble Level Spirit level Round Bubble level Universal Protractor

It allows you to ensure your turntable is level. 

Simply place it on top of the turntable and check in several places, adjusting the turntable legs or turntable platform until your turntable is perfectly level. 

 
As proper leveling is critical to getting the best sound from your turntable, this is an essential vinyl accessory.