Riverstone Audio Turntable Stylus Tracking Force Pressure Gauge / Scale, LP Digital Mini-Scale, 200g, 0.01g Resolution Equipped with a precision strain gage load sensor, up to 200g, 0.01g resolution. Switchable units: g/oz/dwt/ct, Tare Function, Low Battery and Overload indication. Light weight and ultra compact size 40 mm (W) x 71 mm (L) x 10.25 mm (H) (height dimension measured from metal sensor plate to scale base). Auto shutoff (2 minutes). Anti-slip EVA pads on backside of gauge for improved stability. The tracking force gauge is provided with a convenient foam-lined storage box and a 5 g mass to verify scale readings prior to use. ***BATTERY NOT INCLUDED******PLEASE NOTE: ***Requires one CR2032 battery*** CR2032 batteries are available through Amazon, as well as many pharmacies, electronics stores and home improvement centers).***