A high-quality combination front door lock provides a mechanical, keyless, and weather-proof point of entry. This type of lock is operated with a simple touch control open up. Students, office employees and other drawer owners are the most common users of combination locks.
By using a mechanical lock of this design, all concerns of accidental lockouts are eliminated as well as potential loses of your key. Moreover, there is no need to be worried with copied or duplicated keys. In a combination lock, you only need an entry number code, often 3 or 4 digits. It can be added, deleted, or altered by the owner as often as required.
Combination locks are really amazing so how are they built? To know how, check out the video below: