North Carolina Locksmith Practice Exam

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What is the purpose of a Pinning Chart?

A reference for the dimensions of a key
A diagram showing lock installation order
A visual guide for key duplication
A chart depicting pin sizes and installation sequences

The correct answer is: A chart depicting pin sizes and installation sequences

The purpose of a Pinning Chart is to depict pin sizes and installation sequences within a lock cylinder. This chart serves as an essential tool for locksmiths when rekeying a lock or installing new pins to ensure that the lock functions smoothly with its corresponding key. A Pinning Chart provides specific information on the various lengths of pins used in a particular lock type, allowing locksmiths to accurately match those pins with the cuts on the key. The installation sequence is also crucial, as it dictates how the pins should be arranged in the lock cylinder to align properly with the key, preventing malfunction or unauthorized access. Using a Pinning Chart ensures that locksmiths can maintain the security integrity of the lock while also allowing the key to operate correctly. It is an indispensable resource in the practice of locksmithing.