barómetro1

¹ = barometer, litmus paper.

Ex. Society can act as a barometer to indicate the success of the library's work.

Ex. Because some of these indicators are not as sensitive litmus paper, determining to which acids each indicator is sensitive presents an enjoyable challenge for students.

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* barómetro aneroide = aneroid barometer.

* barómetro de mercurio = mercury barometer.