New Riverstone Audio Record-Level Turntable Stylus Tracking Force Gauge/Scale Product Details A professional tracking force gauge designed for vinyl record enthusiasts who require precise measurement of vertical tracking force (VTF). For accurate VTF measurement, the stylus tip should be at the same vertical position as the record surface—known as "record level." The Riverstone VTF gauge measures vertical tracking force approximately 2 mm to 3 mm from the surface of a turntable mat or platter, matching the height of a stylus tip resting on an LP record (LPs range from 1.9 mm to 2.9 mm in thickness). This design eliminates the need to remove your platter mat, as the gauge arm positions the stylus at the correct height. In contrast, less expensive gauges typically measure stylus tip force between 6 and 10 mm above the surface, which can lead to inaccurate tracking force readings. To minimize interference with moving magnet (MM) and moving coil (MC) cartridges, the gauge is constructed from durable plastic, and the detachable cantilevered extension arm is made from non-ferromagnetic stainless steel. Two calibration masses (5g and 20g) are included for quick recalibration (takes about one minute). With larger calibration masses (not included), the gauge can be recalibrated for use up to 100 g. A polymer pad on the measuring platform protects the stylus tip and ensures accurate centering during measurement. The LED display features a bright green readout that is easy to read. A comprehensive instruction manual is included. Overall dimensions: 52 mm (W) x 91 mm (L) x 12.0 mm (H); height measurement is with cover removed. Note: Installation of the record-level extension arm requires basic technical knowledge, though no tools are needed. A tin storage box is included to protect the gauge when not in use. All Riverstone Audio Tracking Force Gauges are covered by a full two-year warranty. Requires one alkaline AAA battery (battery not included).