The phrase "accurate barometer" is correct and usable in written English.
It can be used to describe something that serves as a reliable indicator or measure of a particular situation or condition.
Example: "The recent survey results are an accurate barometer of public opinion on the new policy."
Alternatives: "reliable indicator" or "true measure".
His batting average, then, has never really been an accurate barometer of his overall contribution.
An individual stock price is often an accurate barometer of a company's earnings prospects.
Manager Bobby Valentine says the first five months are a more accurate barometer of his team.
The most accurate barometer of taste – and its obverse – in the post-assassination arts was Jacqueline Kennedy.
This watch has impressive features, including a highly accurate barometer (showing changes in barometric pressure, which precede weather changes).
"Put crudely," said a western diplomat, "the body count of US soldiers is the most accurate barometer of Syria's morale".
Proponents of the technique, however, say neuromarketing is simply a more accurate barometer of consumer response than traditional focus groups.
The Case-Shiller index of housing prices in 20 major cities, considered one of the most accurate barometers of such prices, has declined about 25percentt since mid-2006.
Given the enormous influence that everyday factual information has over what reactive attitudes people have and whether they even have them, it seems unwise to treat them as accurate barometers of moral responsibility.
However, because February is considered a transitional month in the retailing industry, the next few months will prove more accurate barometers for the nations economic health.
Ferruccio de Bortoli, the editor in chief of the leading newspaper Corriere della Sera, the country's most accurate political barometer, wrote that "what hinges on this meeting, it bears emphasizing, is nothing less than the future of the country".
