5Volt:
Fire extinguisher striking clock - schematic
5Volt:
Fire extinguisher striking clock : detail of the clapper
5Volt:
Fire extinguisher striking clock : the clapper
5Volt:
Fire extinguisher striking clock
5Volt:
Fire extinguisher striking clock : closeup
5Volt:
Fire extinguisher striking clock : detail of the clapper's end
5Volt:
Fire extinguisher striking clock : board and clapper