Vinyl Guru Turntable Tonearm Headshell Cartridge Stylus Azimuth Vta Set Up Device Mini 8Mm Bubble Spirit Level A mini spirit level that sits on the headshell of your tonearm while it is tracking. A great set up device - it is removed for normal playback. 8mm diameter and 0.2g in weight so it can be placed on the tonearm while it is tracking. The sensitive level can then be used to accurately check azimuth and VTA. The tonearm is not included.