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Per-cus′sion-fuse.


Ordnance.) A fuse in a projectile set in action by concussion when the projectile strikes the object.

In the example, A represents a shell. A plunger h held by a spring i and detent o, which engages in a notch at its rear end, is released by withdrawal of the detent occasioned by the shock of impact, and strikes a nipple g on which is a percussion-cap.

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