Test Your Turntable Speed
Pro-Ject's Strobe it gives you a very convenient and accurate way to test to see whether your turntable is spinning at the proper speed.
Place Strobe it on your platter, turn on your turntable strobe light (not included), and start your turntable. If the lines on the disc stay in place and do not go forward or backward, your turntable speed is correct.
Strobe it includes sets of lines for testing 33-1/3 rpm, 45 rpm, and 78 rpm speeds. It works on 50 Hz and 60 Hz power.
Cartridge Alignment, Too
Strobe it does more than just check turntable speed. The flip side of Strobe it provides a diagram for easy cartridge alignment.