Accurate stylus gauge for stylus tracking force measurement. Large LCD screen, easy to read With blue backlight, convenient to use in a dark Automatically power off when there is no operation for 3 minutes. High precision, high sensitivity Accurate stylus tracking force is important for ensuring the playback result and life of your valuable records and cartridge. Too high stylus tracking force results in shortened record/stylus life while; too low stylus tracking force results in easy mistracking. Both too high stylus tracking force and too low stylus tracking force result in poor audio performance. So you need a accurate stylus gauge to measure your stylus force. Measurement range:0-5.00g ( display 3 digit ) Accuracy:±0.01g Unit:g/oz/ozt/dwt(tl)/ct/gn Power Suplly:2 x 1.5V lithium cell Ag12(Not included batteries) Stainless steel weighing area:Nonmagnetic Colour:Gray Material:ABS Size:96x43x20mm/3.8x1.7x0.8in Package Contents: 1 x Stylus Tracking Force Gauge 1 x Calibration weight 1 x Leather case