The Cub-54 and L-54 Grader Blade pdf file on the server has some of the measurements- they were penciled in by whoever owned the manual I guess. It is not a great manual and is only 8 pages, doesn't have a parts list or anything, but it might help a bit.
The McCormick Deering Leveling and Grader Blade Manual is for my blade, but it is missing the improvements found on the 54-A blade. I am hoping to be able to find all the missing parts for the improvements and/or detailed measurements myself.
BUT - I actually have the physical blade here - you are welcome to make detailed measurements any time you wish.
Now, Does anyone out there have a decent Owner's and Setting Up Instruction Manual for this blade? A parts list would be nice, although I think it is covered in the CBI-1A for the regular Cub, CBI-2A for the Lo-Boy and it is the very first item in the CBI-3 although it says it is the 54-A but is missing the helper spring setup for the front mount.
Donations cheerfully accepted!