Difference between revisions of "Bell's Station Keeper"
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It had a prism within which would ship an object 16 feet at 200 yards, or 40 feet at 2.5 cables. Presumably, there were common rules-of-thumb to apply to this angle which would facilitate a quick determination at common distances such as between columns or to the ship ahead.{{INF}} | It had a prism within which would ship an object 16 feet at 200 yards, or 40 feet at 2.5 cables. Presumably, there were common rules-of-thumb to apply to this angle which would facilitate a quick determination at common distances such as between columns or to the ship ahead.{{INF}} | ||
| − | In a pinch, it could also be used to measure ranges in combat, such as for [[Torpedo Control]] purposes. | + | In a pinch, it could also be used to measure ranges in combat, such as for [[Torpedo Control]] purposes.{{HTC1916|pp. 59-62}} |
==See Also== | ==See Also== | ||
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==Bibliography== | ==Bibliography== | ||
{{refbegin}} | {{refbegin}} | ||
| − | *{{ | + | *{{HTC1916}} |
{{refend}} | {{refend}} | ||
[[Category:Shipboard Equipment]] | [[Category:Shipboard Equipment]] | ||
Latest revision as of 18:30, 24 July 2012
Bell's Station Keeper, Pattern 494, was an optical device used in the Royal Navy for rough-and-ready estimate of ranges, useful to ensure one's own ship was at the correct distance from another.
It had a prism within which would ship an object 16 feet at 200 yards, or 40 feet at 2.5 cables. Presumably, there were common rules-of-thumb to apply to this angle which would facilitate a quick determination at common distances such as between columns or to the ship ahead.[Inference]
In a pinch, it could also be used to measure ranges in combat, such as for Torpedo Control purposes.[1]
See Also
Footnotes
- ↑ Handbook of Torpedo Control, 1916. pp. 59-62.
Bibliography
- Admiralty, Gunnery Branch (1917). Handbook of Torpedo Control, 1916. C.B. 302. Copy No. 141 at The National Archives. ADM 186/381.
