This record stabilizer is ideal for maintaining stability, and improving acoustic quality. Piano notes become crystal-clear, mid-range is vibrant and alive, while vocals soar realistically. Features: 1. No-slip soft base pad. 2. Durable aluminum material. 3. Professional design with right weight and well size. 4. Accurate speed measurement and bubble level. 5. Fashionable and modern appearance. 6. Weight distribution is centered nicely. 7. sufficient to eliminate variation or wobble. Dimensions: - Diameter: 75mm / 2.95in - Height: 33mm / 1.3in - Hole Diameter: 8mm /0.31in - Weight: 278g / 9.8oz Instructions: The scale and bubble level balance on the LP stabilizer can be used for speed measurement. Two speeds marked on this stabilizer 60-33, 60-45 (60Hz - 33 rpm or 60Hz - 45 rpm). The measuring method as follows: If use 33 rpm LP disc, when playing the record, please obverse whether 60-33 scale visible clearly. It proves that the speed is normal if rotating speed evenly and scale clearly. In addition, it shows that the speed is not correct if see the scale fuzzy or connected in a line. The same measuring method for LP disc 60Hz - 45 rpm as above.