Negative Positive
Title: Quite useful
Review: Every now and then i would become interested in lockpicking and buy a new book. Unfortunately they would all talk about some shear line and wards without really explaining what they are or where they are inside the lock. I struck gold with this book since their illustrations clearly show where everything is and how it works. For the first time i was actually able to visualize the parts of my lock move. I would actually close my eyes and think of whats going on inside the lock and feel slight movements inside it. I must complain though, this book left me yearning for more, now i can't wait for the second volume.
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