I saw this thread...
... and it got me thinking about how to solve a minor annoyance with digital calipers:
I have an iGaging IP54 Electronic Digital Caliper. I like it very much. The one drawback is the way that it displays fractions. If your measurement rounds to 128ths, you see 128ths. You can't set it to round to the nearest 1/16, for example.
I have some small experience with math, but rounding quickly from 128ths is not my best skill. Sometimes I want to round the reading to what I think is the "real" or "intended" value, and not the exact measure. That's because I may accidentally tilt the caliper jaws when measuring, for example.
When I see "113/128" on the caliper display, I am not super fast at figuring out that the "actual value" or "rounded value" is 7/8 inch. It turns out that 113/128 is only 1/128th of an inch above 7/8 inch. The actual value is probably 7/8ths, but I angled the caliper jaws when I made the measurement.
To deal with that, I just made a quick and dirty spreadsheet in Excel. When you get a "large fraction", use the table in the spreadsheet to scan for a nearby row with a "longer line" to round up or down to a "nicer" fraction in 16ths, 8ths, or whatever.
At the top of the chart, find the denominator (bottom) of your fraction on the caliper display. Slide your finger down the column until you find the numerator (top) of your fraction. Now look just above and just below it for a row that has more values to the right. You must decide how much you want to round up or down. (How far away from your reading that you want to stray.) It depends on whether you are looking for the nearest 16ths or 8ths or whatever, to get your "rounded" value.
The next time I go out to the garage, I will tape this printout inside one of the cabinets. I hope it helps others.