Those fawking things should have huge warning labels on them. You know you could just go ahead and use the metric system for it's benefits instead of trying to make imperial untis perform like metric....Not sure how many people know about these, but they can be very useful for layout and for measuring in general anytime when ~1/20" precision is adequate.
It's an engineers tape measure and it's graduated in 0.01', 0.1' and 1.0'.
It breaks feet into base ten like the metric system and lets you make measurements that are easier to add/subtract/divide quickly and without error.
View attachment 2079889
For example: I wanted to space these slider supports out evenly over a 3.16' span.
View attachment 2079897
3.16' / 4 = 0.79'
0.79' x 1 = 0.79'
0.79' x 2 = 1.58'
0.79' x 3 = 2.37'
0.79' x 4 = 3.16'
make marks at 0', 0.79', 1.58', 2.37' and 3.16' and done.
much easier than doing math on fractions or converting back and forth between them and decimal equivalents.
I needed to order some spare trailer axles, so I grabbed a tape and crawled under my trailer. I knew the spring perch distance I thought I needed. Used the tape and came up with a number that didn't make sense. Remeasured, still didn't make sense. I went and got another tape to compare thinking the first one might have stretched or been damaged. All the foot marks lined up, but the "inches" didn't.
I seriously considered tossing that tape into my contractor buddies truck for the ensuing funny, but decided against it.
Edit: Mine only had the tenths on it, not a combo tape like you're shown.