[Acrylic Material] Made of superior acrylic material, the turntable record disc is sturdy, heat- and has a long service life.<br> [Convenient to Use]The LP record tachometer is and accurate, ensuring good calibration without affecting the use of the record player.<br> [Record Calibration] This calibration strobe disc is an essential adjustment tool for LP record enthusiasts, and is highly practical and versatile.<br> [Easy to operate]Place the record on the disc, turn on the light, and adjust the turntable speed until the pattern on the disc stops moving.<br> [Main Function]Compact and practical, this turntable strobe disc is mainly used for calibration and speed detection of LP records.<br> Function: For 33RPM 45RPM Turntable Rotation Speed Detection<br> Diameter: . 80mm / 3.1inch Thickness: .7.7mm / 0.3inch<br> Product Type: Turntable Strobe<br> Colour:White<br> Material:Acrylic<br> Package Contents:<br> 1 x Calibration Tachometer<br> Only the above package content, other products are not included.<br> Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.