For MM//MI and Piezoelectric Acoustical , Nonmagnetic, No Magnetic Field Adhesivity, Reading High Precision and Accurate Stylus Gauge for Accurate Stylus Force Adjustment Accurate Stylus Force is Important for Ensuring the Playback and Life of Your Valuable Records and Cartidge Blue Backlight Display with High-quality Stainless Scale, Packaged with Superior Leather Sheath for Good Protection Comes with One Weight and Two Button Batteries, Enables You Longtime Standby Feature: For MM//MI and piezoelectric acoustical , nonmagnetic, no magnetic field adhesivity, reading High precision and accurate stylus gauge for accurate stylus force adjustment Accurate stylus force is important for ensuring the playback and life of your valuable records and cartidge. Too high stylus force results in shortened record/stylus life while too low stylus force in easy mis and both of the cases with come into poor audio performance. Specification: Capacity: 0-5.00g ( display 3 digit ) Graduation: 0.01g- highly sensitive Power: 2 x 1.5V lithium cell Ag12 (included) Easy to operate, automatic turn-off after 2 minutes' inactivity Stainless steel weighing area - nonmagnetic Colour:Black Material:ABS + Metal Size:9.5*4.8*2.4cm Package Contents: 1 * Stylus dynamometer 1 * Calibration weight 1 * bag Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.