The phrase "a reliable barometer of" is correct and usable in written English.
It can be used to indicate that something serves as a dependable measure or indicator of a particular situation or quality.
Example: "The company's quarterly earnings are often seen as a reliable barometer of its overall financial health."
Alternatives: "a trustworthy indicator of" or "a dependable measure of".
Indeed, newsstand sales, a reliable barometer of how readers feel about a magazine, surged 17percentt in those months.
Since Indonesia fell into crisis, the rupiah has been a reliable barometer of public confidence in the government.
The annual participation survey for Adult Learners' Week has proved a reliable barometer of trends in adult learning over the past 20 years.
Few Republicans are treating their first presidential primary debate, held in South Carolina last Friday, as a reliable barometer of sentiment inside their fragmented and increasingly disenchanted party.
Fashion has always been a reliable barometer of social change, and almost every attempt to prohibit a trend hides a far deeper fear.
He said a variety of factors affect the number of people who file complaints, and he questioned whether the statistics serve as a reliable barometer of police abuses.
Mr. Sharpton's event has become a tradition, though, and a required pit stop in Democratic circles, in part because it has functioned as a reliable barometer on the issues and the people of importance to black voters.
Many investors see bond markets as a more reliable barometer of a government's default risk.
But analysts noted that the four-week moving average, considered a more reliable barometer of labor trends, rose to 345,000 from 333,000 the previous week.
The four-week moving average, considered a more reliable barometer of employment conditions because it irons out weekly fluctuations, rose to 410,750 last week from 408,250.
The moving average, considered a more reliable barometer of job market trends because it irons out weekly fluctuations, is at its lowest since August.
