The phrase "useful barometer" means something that can be used as a tool to measure or indicate changes in a situation, like a weather barometer helps determine changes in the weather.
Sentences with «useful barometer»
Although there are no guarantees that anyone other than the taxpayer involved will receive the promised treatment, private letter rulings serve as useful barometers of the IRS's thinking. (inc.com)
The companion to the Wholesale Trade Survey is the Retail Trade Survey (MRTS), whose data provides a useful barometer on consumer confidence. (canadianbusiness.com)
It provides a useful barometer of relative city attraction, as well as highlighting the intense strains that many cities are now facing as their real estate markets try to accommodate growth. (jll.com)