Usborne Fall of Shot Indicator
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Usborne's Fall of Shot Indicator[1]
Usborne's Fall of Shot Indicator was a specialised timer to help in assisting Spotting by sounding an audible alarm when one's own shots were about to fall about the target.
[TO BE CONTINUED - TONE] ARTS 1916 p. 152
See Also
Footnotes
- ↑ Annual Report of the Torpedo School, 1916, Plate 88.
Bibliography
