Hudson Hi-Fi Turntable Cartridge Alignment Protractor Mat

Developed and designed in New York, designed to use with all standard size turntable spindles. Easy to use, one sided alignment mat provides a diagram for cartridge alignment Second side, Stroboscope Tests turntable platter speed: Works on 50 Hz and 60 Hz. Tests 33-1/3 rpm, 45 rpm, and 78 rpm speeds Material allows power users to draw tracking points on the mat unlike acrylic alternatives Manufactured from 3mm thick rigid Acrylic, UV printed and cured for five hours to ensure longevity of the print Body material type: ProtoMat; Hand orientation: Ambidextrous; Number of keys: 10