Hudson Hi-Fi Double Sided Stroboscope and Protractor Alignment Mat - Align Your Cartridge and Measure Turntable Speed;

Hudson Hi-Fi Double Sided Turntable LP Alignment Protractor Mat and Stroboscope
Cartridge Alignment Tool The alignment tool provides a diagram for easy cartridge alignment.
Manufactured from an aPVC composite so you can draw your own tracking points for custom alignments
Single sided
Instructions included
Phonograph LP Phono Turntable Alignment Mat
Second side, Stroboscope Tests turntable platter speed: Works on 50 Hz and 60 Hz. Tests 33-1/3 rpm, 45 rpm, and 78 rpm speeds

Compatible with all turntables and popular brands such as: Rega, Linn, Music Hall, Avid, Pro-Ject, VPI, Audio-Technica, Crosley, Jensen, Thorens, Garrard, Micro Seiki.