It is also available as an epub for US$9.99. Please click on the button below. The downloaded .zip file contains the plans as a printable pdf. After the payment is finalised, you will be redirected to another page with a download link.
The epub format is used on iPads and other Apple products, but epub readers for other operating systems are available. The Firefox web browser has an epub reader, Cool Reader is another, and Calibre is an ebook reader and library software as well as converting files between ebook formats.