Here's the description from the web site.
Mechanick exercises: or, The doctrine of handy-works. Applied to the arts of smithing, joinery, carpentry, turning, bricklayery. To which is added, Mechanick dyalling: shewing how to draw a true sun-dyal on any given plane, however scituated; only with the help of a straight ruler and a pair of compasses, and without any arithmetical calculation (Google eBook)
Printed for D. Midwinter and T. Leigh, 1703 - 352 pages
Try this link and click on "preview this book"
http://books.google.com/books?id=t_IRCzjTf08C&dq=sealskin&source=gbs_navlinks_s