You're right. 10-8 is too broad. It could mean: time, a date, a symbological code, numerical factor, an abbreviation of some sort, and many other things. It's too subjective. So, in your experience; 10-8 can mean, moving bowels and glancing at a Playboy? Since, most men or women do not read Playboy for the articles; there's not much reading, other than the measurements and the name. Maybe not the name (there, my use of semicolons are in the right places). Of course this is all conjecture (I am closing my posts with this because apparently we have to site and quote our statements. Also, someone(s) didn't like me ending off with, good luck and all the best).
What's in between? Sounds like a fun place, where you've worked.