Maptech ChartKit Region 12: Southern and Central California San Fransico Bay to Ensenada, 10th Edition A Great Value You'll save up to 90% compared to the cost of purchasing individual government charts. The Perfect Size Large enough to plot routes; small enough to fit on your lap. Easy to Use Pre-plotted waypoints and lat/long grids for your GPS; magnetic courses for your compass. Fully Referenced Geographic and alphabetical indexes quickly point you to the right page. Reliable A great primary or secondary navigational reference.