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A barrel selector mechanism is used to choose whether the top or bottom barrel fires first. The barrel selector is combined with the manual safety and is located at the top rear of the receiver, behind the top lever. If the first shot misfires and the gun does not recoil, the trigger can be reset to fire the second shot. This is accomplished by ...
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A pressure switch is a form of switch that operates an electrical contact when a certain set fluid pressure has been reached on its input. The switch may be designed to make contact either on pressure rise or on pressure fall. Pressure switches are widely used in industry to automatically supervise and control systems that use pressurized fluids.
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A residual-current device (RCD), residual-current circuit breaker (RCCB) or ground fault circuit interrupter (GFCI) [a] is an electrical safety device that interrupts an electrical circuit when the current passing through a conductor is not equal and opposite in both directions, therefore indicating leakage current to ground or current flowing to another powered conductor.
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Center for Neurotechnology/YouTube. Quadriplegic Jessie Owen can move her arms enough to paint after trying a new device that restores movement to those with spinal injuries.
The Snake Charmer is a .410 bore, stainless steel, single-shot, break-action shotgun, with an exposed hammer, an 18-1/8" barrel, black molded plastic stock and forend (aka "furniture"), and a short thumb-hole butt-stock that holds four additional 2-1/2" shotgun shells.