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Old 2nd August 2014 | 14:40
  #37 (permalink)  
Mach Jump
 
Joined: May 2005
Posts: 1,115
Likes: 4
From: Yorkshire
I suspect that the reason for this is exactly as you say.
You are right. The reason is to avoid confusion between 'Thingeys' and Inches of Mercury below 1000 'Thingeys'


MJ
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