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Title: Worthless information
Review: This book is essentially worthless. It does not contain enough details to build a well drilling rig. It does not explain the most basic principles of how a rig is supposed to work, it does not contain a single drawing of parts to be built (only some unclear pictures). It doesn't contain any accessible sources for parts except the author's own company. It is only 20 pages long and poorly written. Given that much, I expect that if you did try to build what the author is talking about, it would not work well, if it is as poorly designed and done as his book. Sales literature from companies that sell these contains more useful information.
