Nobsound 50/60Hz Stroboscopic Speed Strobe Light + Tachometer Disc for Turntable LP Record Player (Power Supply Version)

How to use: 1. Place the tachometer disc on the turntable of the record player and turn on your turntable. 2. Turn on the strobe light, align the light to the tachometer disc , try to put it closer and about 5-10 CM is appropriate. 3. Eyes staring at the corresponding 33.3/45 speed stripe on the tachometer disc. If the stripes of the LED light must be stable and not moving, the rotation speed i...