Master Keying - By The Numbers (Trade Training Manual) Billy B. Edwards Jr (Author) Price: $90 (plus shipping and handling) In Stock. Ships from New Jersey when purchased from Lounging Lizard Publishing, LLC. Frequently bought together This Item (Master Keying - By The Numbers) Master Keying - By The Numbers by Billy B. Edwards Jr Master Keying Textbook - Third Edition Other Books by this author Editorial Comments This is an excellent book for Master Keying Locksmiths and Master Keying Specification Writers at all levels which will guide the reader from Beginner through Apprentice to Journeyman. It is an easy read, despite being a Trade Technical Manual. It is well organized and makes almost no assumptions regarding the reader and their capabilities or previous experience. It is heavily illustrated throughout. On a scale of 1 to 5 stars with 1 being Not Recommended" and 5 being "Buy NOW!", my opinion puts this at 4.5 stars.

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