Thread: WW2 Canadian Wireless Valve Testers
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  #17  
Old 31-10-18, 16:19
Bruce MacMillan Bruce MacMillan is offline
a Canuck/Brit in Blighty
  
Join Date: Jul 2004
Location: Hell Fire Corner, Kent UK
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The white B9G socket is 1 3/8" (1.375), the two black ones in the middle are both 1 1/8 (1.125) and the large black one is 1 1/2" (1.5).

I think these are standard sizes like the Greenlee punches.
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