Master Keying Textbook 12+

📕 This easy to read, comprehensive manual is intended to take the reader from a beginner at master keying through to intermediate level in a matter of only a few days. Based on the popular two day course and the original 'Practical Master Keying of Pin Tumbler Locks' from 1981, but fully updated and using all approved terminology whenever possible. Quality training for locksmiths or an excellent reference for experienced tradespeople.