Clearaudio Azimuth Optimizer Test Record LP-ideal for use w/Fosgate Fozgometer The Clearaudio Azimuth Optimizer Test Record is a great tool for getting the best performance out of your tonearm and turntable. To experience music reproduction at highest quality levels from analog records it is required to achieve optimal positioning of the pickup stylus in the record groove. When used in conjunction with the Musical Surroundings Fozgometer Azimuth Range Meter (sold separately), this LP pressed on heavy audiophile grade vinyl lets you make the proper tonearm adjustments.