Good question, Duane...... I 100% agree..... and you are spot-on.. typo! I have corrected the original; many thanks for catching that.
I was giving these numbers to the OP so he could see what is measured and important. I'll emphasize again.... these are 'service limits' which tend to be tolerance limits for not replacing or repairing something that can be used in general service. Service limits are not always what you want to build to for anything performance.... For example, the service limit on timing chain slack for a /6 is such as to give you 3-4 degrees of timing retard.... not what you would want to do for a hot rod LOL
