Bell's Station Keeper: Revision history

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24 July 2012

27 February 2011

  • curprev 20:4520:45, 27 February 2011‎ Tone talk contribs‎ 826 bytes +826‎ Created page with ''''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 …'
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