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Thread: Gaining An R.A.F Pilots Brevet In WW II
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Old 30th Dec 2013, 12:39
  #4933 (permalink)  
DHfan
 
Join Date: Apr 2008
Location: Derbyshire
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A further morsel from my bottomless pit of useless information.

For some strange reason, BSP is the international standard for pipework (except in the USA) and despite galloping metrication there don't appear to be any moves afoot to replace it.
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