Product Description The DJ's scale is designed for optimum performance from turntables (for DJ's and record enthusiasts). One of the basic procedures for set-up is calibration of vertical tracking force (VTF). A seemingly simple practice, most listeners mistakenly assume that a quick adjustment using graduations on the arm or a cheap balance beam scale is adequate. While those methods may be appropriate for entry-level systems, they have no place in a set-up regime for a high-end turntable. Use of the Compact Disc Scale Digital Stylus Force Gauge as part of set-up ensures a precisely calibrated VTF. It's even designed to look like part of a DJ's equipment to blend with the customer's lifestyle. Ships in assorted CD covers & Scale Styles.