Why does every lock have a 'mysterious' small hole at the bottom?
If possible, try looking at today's newer locks to see if they have a small hole at the bottom?The formation and development of locks and keys
Keys and keys have been accompanied by humans through many stages in history and change accordingly.Tips for making door lock easily from ... plate
With just a plate, you can protect yourself by turning the fork into a solid deadbolt.Israel launches 'masterpiece' pistol
Famed for its reputation as a defense industry, Israel has recently launched a new pistol to meet the four highest standards in combat.