Positional Master Keying Unveiled By: William M. Lynk, CML, CPS, ICML, CMIL, CAI, M.Ed --- This is the first book ever written and published on the complex topic of Positional Master Keying in the industry of locksmithing. Never before has anyone attempted to tackle the intricacies and nuances of this fundamental, but least understood aspect of Master Keying. William M. Lynk, CML, CPS, ICML, CMIL, CAI, M.Ed., a locksmith, writer, trainer and educator for over 40 years, has thoroughly unveiled the details in an easy-to-understand, but accurate and professional presentation of the subject. He takes you from the beginning, on a journey through traditional Split-Pin Master Keying, and then to the specific concepts and techniques of Positional Master Keying. You will visit Schlage Wafer, Kaba Gemini, Sargent Keso, MIWA EC and other manufacturers that use Positional Master Keying so you can clearly see the correlations. Exploded views, charts, graphs, diagrams and pictures all help to enhance the story. Take the 60-question FINAL EXAM afterwards to confirm your new mastery. Then review the Locksmith Dictionary included for easy reference. You'll also find the little-understood 3-D Master Keying section allowing you to expand your master keying horizon by visualizing a large SFIC system in a 3-dimensional format. Additional valuable master keying information is included in the COLLECTIONS addendum with an exhaustive INDEX to locate topics in seconds. And, the elegant FOREWARD was written by John K. Hubel, CML, ICML, CMIL, M.Ed., LIST Council Administrator, an ALOA Lifetime Achievement Recipient and an Industry Expert, held in high esteem and recognized nationwide. Don't miss out...join in and finally discover what is so elusive to many, but obvious to few regarding Positional Master Keying1