Stroboscop ABS 30 cm Tonar

Precision stroboscope disk 30cm. Ideal for lovers of 78rpm records. With this you can check and / or adjust the correct speed of your turntable. One side is for 50Hz and the other for 60Hz this disk has a scale for 8.33 / 16.66 / 33.33 / 45/70/72/73/75/76/78/80/81/83/85 / 8790rpm. Durable acrylic version in Tonar yellow. In the early days the 78rpm records were cut with a decent tolerance, each label had its own standard. Only later were the real industry standard of 78 revolutions per minute agreed. Older mechanical 78rpm record players therefore often had a speed-fine control because many older bakelite and shellac plates turned too fast or too slow. With this stroboscope you can determine exactly the optimal rotational speed per plate, with a 78rpm plate sounding good. Note this speed on the cover and adjust it well before the record is listened to again. In short, this stroboscope is indispensable for the collector of shellac and bakelite 78rpm plates!