Manually tripped
A round, usually saucer-shaped, metal item which resounds to striking, with a bell-like tone. It is designed for stationary mounting; does not include any striker or striking mechanism.
NSN 5930-01-395-5067
NSN 6685-00-966-5561
NSN 5905-01-536-8144
NSN 5895-01-469-1832
NSN 4140-00-466-9268
NSN 5855-00-149-0766
NSN 6220-01-374-6667
NSN 5835-01-235-9051
NSN 5990-01-437-4876
NSN 5965-01-571-5678
NSN 6130-00-952-6029
NSN 6110-00-314-0377