1. 

   snotty

   Sure Zed or PW will know the answer - I've asked the question before (but forgot the answer).
   
   Have a T1 case that's been machined (quite well, surprisingly) in the past. Markings on the centre main are U0.5 U0.25.
   
   Is this a 0.5mm line bore + 0.25mm grind on the crank?
   
   Ta muchly...

    

   snotty, Dec 11, 2012

   #1
2. 

   Paul Weeding

   You would be correct

    

   Paul Weeding, Dec 11, 2012

   #2

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