Yosoo Professional Vesion LP Digital Turntable Stylus Force Scale Gauge led dzr(batteries not include) 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. High precision and accurate stylus gauge for accurate stylus force adjustment. Easy to operate; automatic turn-off after 2 minutes' inactivity - Stainless steel weighing area - nonmagnetic Capacity : 0-5.00g ( display 3 digit ), Graduation : 0.01g- highly sensitive, Dimensions : 96 X 43 X 20 mm, Power : 2 X 1.5V lithium cell Ag12 (not included)