The phrase "a constant reading" is correct and usable in written English.
It can be used in contexts where you are referring to a measurement or observation that remains stable over time.
Example: "The sensor provided a constant reading of the temperature, indicating that the system was functioning properly."
Alternatives: "a steady measurement" or "an unchanging value".
Once they were replaced in the measurement location they returned to a constant reading of 100% RH within one week.
We ensured stability of all our measurements through a constant reading of all our measurements that when other researchers measured same parameters, the error margin was insignificant.
Starting from time point 0, 1 mL samples were taken at hourly intervals for OD600nm measurements until a constant reading was attained and again at time point 24 h.
"It's less like there was a eureka moment of, 'Oh my God, everybody wants this,' and more of a just constant reading and interpreting data, every day for 20 months," Goff said.
The Chinese writing system is non-alphabetic, comprising thousands of pictographs called "characters," which need to be studied and internalized through rote memorization and constant reading and writing over a long period of time.
These were collected by the ROV Jason II pilots, who waited for a constant temperature reading before triggering the samplers.
Bloom's answer is that "only deep, constant reading fully establishes and augments an autonomous self".
But his embrace of details was allied to an instinctive understanding of the larger picture, great personal courage, historical insight based on his constant reading, and, above all, perhaps, an appreciation of the moral and psychological dimensions of command and government.
It is hard to overestimate the significance in his young life of the constant reading aloud from American classics to an older man indifferent to the world's censure.
Chess and sports helped to shape Franklin's youth in Toronto, along with constant reading.
She had complemented her experience by constant reading, including reading of trade journals, and the Wall Street Journal all of which enlarged her knowledge of the species.
