Draper Automotive Tachometer is a versatile tool designed to measure RPM (Revolutions Per Minute) of various engines, including 4-stroke and 2-stroke, as well as Distributorless Ignition Systems (DIS). With its inductive pickup, it easily reads ignition sparks, providing accurate RPM readings. The large LCD display ensures clear visibility, and the power range switch allows for precise measurements. Whether you're a professional mechanic or an automotive enthusiast, this tachometer is a valuable addition to your toolkit for engine diagnostics and maintenance.