For MM//MI and piezoelectric acoustical pickup, nonmagnetic, no magnetic field adhesivity, reading reliable.High precision and accurate stylus gauge for accurate stylus force adjustment.Accurate stylus force is important for ensuring the playback result and life of your valuable records and cartidge.Too high stylus force results in shortened record/stylus life while too low stylus force result in easy mistracking and both of the cases with come into poor audio performance.Automatic turn-off after one minute inactivity(adjustable). There are 7 units and the less-used units can be by setting.Specification:Capacity : 0-100gGraduation : 0005g highly sensitiveDimensions : 95 X 45 X 13 mm : 1X AAA battery( no included )Weight Unit options: g, oz, ct, ozt, dwt, gn,TLBacklight: blue backlightAutomatic low battery alarmMaterial: Metalcolour: As shownPackage Contents:1 x Digital Cartridge Stylus Tracking Force Scale Gauge1 x Extra tray1 x 20g weight1 x english User manual1 x boxOnly the above package content, other products are not included.Note: Light 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.