You can also get a Kindle version (under $15, so less than 50¢ a pattern!) or a Nook version if you want it NOW.
If you have the kindle version and you’re having trouble seeing the charts or schematics, you can view or print them from your browser. Here’s how: Log in to Amazon.com, hover your mouse over Your Account (top right corner) and click Manage Your Kindle. You’ll see a list of your kindle titles. Under Actions for the title, click Read Now. Go to the chart in question. Click ctrl/command and + (or zoom from your View menu) as much as necessary to zoom in and make the chart bigger. You can even print from there. You can also double-click charts on your ipad to enlarge them.