Moving right along, here is a learning support on using a comma in measurements. This is the twelfth of fifteen learning supports on commas posted in a series on Mark’s Text Terminal. (You can find an excursus on this choice of publishing practice here.)
If you find typos in this document, I would appreciate a notification. And, as always, if you find this material useful in your practice, I would be grateful to hear what you think of it. I seek your peer review.
Mark's Text Terminal 