Riverstone Audio Precision Record Level Digital Turntable Stylus Force Scale Gauge for Tonearm Phono Cartridge VTF, 0.005g Resolution (Graphite)

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A Professional digital stylus tracking force scale designed for vinyl record purist's interested in precise measurement of vertical tracking force (VTF) at the correct vertical tracking angle (VTA). When used with the detachable cantilevered extension arm, the scale closely approximates the vertical position of the stylus on the surface of a vinyl record when it is playing on a turntable - providing accurate “record-level” measurements. For optimal accuracy, tracking force should be measured at the same vertical position as the record surface. With Riverstone's VTF's patented design (US Patent D878232), stylus tracking force is measured 2 mm - 3 mm from the surface of a turntable mat - the height of a stylus tip resting on an LP record (LP's have a thickness range of 1.9 - 2.9 mm). With less expensive devices, the measurement distance is typically 6 mm to 9 mm. Precision strain-gauge sensor provides 0.005 g measurement resolution and accurate measurements. To ensure accurate VTF measurement, our VTF scales undergo a rigorous multi-point calibration procedure to verify the linearity, repeatability and accuracy of the VTF measurement. We have confidence in our products and provide TWO calibration masses (5g and 20g) to so that you can verify the readings at any time and also allow for future re-calibration if needed. Manufactured using non-magnetic materials to minimize interactions with the MM and MC cartridges. The housing of the VTF scale is injection molded using a quailty ABS polymer. The cantilevered extension arm is machined from a verified non-ferromagnetic grade of stainless steel; the locking screw for the extension arm is machined from aluminum and brass. A polymer pad protects the stylus tip during measurement and allows centering of the stylus on the measurement platform. Riverstone Audio VTF scales are covered by our no-nonsense THREE-YEAR WARRANTY. Two levels of battery protection are used: auto-turnoff of the display and auto powering off of the circuit after 60 to 120 seconds of inactivity. A detailed instruction manual (in English) is provided. Includes a tin storage box to protect the VTF scale when not in use. PLEASE NOTE: *****Requires one AAA ALKALINE battery (SORRY, BATTERY IS NOT INCLUDED)*****.