Northfield Metrics
A quiet workshop for measurement notes, reference tables and the occasional long essay about getting numbers right.
A quiet workshop for measurement notes, reference tables and the occasional long essay about getting numbers right.
These pages collect short write-ups on units, tolerances and the small habits that keep a dataset honest. Nothing here is time sensitive; the archive is updated when there is something worth adding.
If you are new, start with the notes on rounding and significant figures, then move on to the pieces on calibration drift. Each one stands on its own, so you can also simply pick whatever title looks interesting.
Questions and corrections are welcome by mail. Replies are slow but they do arrive.