Sometimes the simplest methods are the most effective. When it comes to VFR cross-country planning, it's hard to go wrong with this time-tested Rotating Plotter from ASA. Constructed of durable, transparent plastic, this flight planning tool features scales for sectional, WAC, and Terminal Area (TAC) VFR aeronautical charts. Both nautical and statute mile measurements are included. In addition to distance measurement, the plotter is also a fundamental instrument for determining your true course (TC) of flight. With its unique, rotating azimuth, this plotter makes it even easier to plan your upcoming VFR flights. A low-cost, must-have flight planning tool that's approved by the Office of Weights and Measures.