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  2. Gun safe - Wikipedia

    en.wikipedia.org/wiki/Gun_safe

    An example (open and closed) of a typical gun safe. A gun safe is a safe designed for storing one or more firearms and/or ammunitions.Gun safes are primarily used to prevent access by unauthorized or unqualified persons (such as children), for burglary protection and, in more capable safes, to protect the contents from damage by flood, fire or other natural disasters.

  3. Gun and personal safes got recalled. One of the problems let ...

    www.aol.com/120-000-personal-gun-safes-013939731...

    How many reports of the problem: Awesafe has received 71 reports of the gun safes being “opened by unauthorized users.” Awesafe Biometric Gun Safe U.S. Consumer Product Safety Commission

  4. Synchronization gear - Wikipedia

    en.wikipedia.org/wiki/Synchronization_gear

    A wooden disk attached to the propeller is used to indicate where each round passes through the propeller arc. A synchronization gear (also known as a gun synchronizer or interrupter gear) was a device enabling a single-engine tractor configuration aircraft to fire its forward-firing armament through the arc of its spinning propeller without ...

  5. Time-delay combination locks - Wikipedia

    en.wikipedia.org/wiki/Time-delay_combination_locks

    A time-delay combination lock is most commonly a digital, electronic combination lock equipped with a delay timer that delays the unlocking of the lock by a user-definable delay period, usually less than one hour. Unlike the time lock, which unlocks at a preset time (as in the case of a bank vault ), time-delay locks operate each time the safe ...

  6. Ahmed Mohamed clock incident - Wikipedia

    en.wikipedia.org/wiki/Ahmed_Mohamed_clock_incident

    On September 14, 2015, then 14-year-old Ahmed Mohamed was arrested at MacArthur High School in Irving, Texas, for bringing a disassembled digital clock to school. The incident ignited allegations of racial profiling and Islamophobia from many media sources and commentators. The episode arose when Mohamed reassembled the parts of a digital clock ...

  7. Verge escapement - Wikipedia

    en.wikipedia.org/wiki/Verge_escapement

    Verge and foliot escapement from De Vick tower clock, built in Paris, 1379, by Henri de Vick. The verge (or crown wheel) escapement is the earliest known type of mechanical escapement, the mechanism in a mechanical clock that controls its rate by allowing the gear train to advance at regular intervals or 'ticks'.

  8. Clockwork - Wikipedia

    en.wikipedia.org/wiki/Clockwork

    Hand-powered electrical equipment, such as a clockwork radio, where an energy-storing spring accounting for much of the size and weight of the device rotates a much smaller electric generator; such equipment is very popular where batteries and mains power (house current) are scarce. Movement of a grandfather clock with striking mechanism.

  9. Movement (clockwork) - Wikipedia

    en.wikipedia.org/wiki/Movement_(clockwork)

    Movement (clockwork) In horology, a movement, also known as a caliber or calibre ( British English ), is the mechanism of a watch or timepiece, as opposed to the case, which encloses and protects the movement, and the face, which displays the time. The term originated with mechanical timepieces, whose clockwork movements are made of many moving ...

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