Sentence examples for a rule of thumb from inspiring English sources

"a rule of thumb" is correct and usable in written English.
It is an old English saying that means a practical principle that is not based on scientific facts but can be used to give an approximate answer or guide to something. For example, "It's a rule of thumb to always double check your work before submitting it."

Idiom

Rule of thumb.

(USA) A basic rule that is usually but not always correct.

Exact(57)

"Poverty protects," said Mr. de Koster, invoking a rule of thumb from the museum world.

It's a rule of thumb.

This isn't a rule of thumb for art over all.

As a rule of thumb, clothes matching is inadvisable.

"Thirty days, as a rule of thumb," Hendricks said.

"A rule of thumb with humor," it says.

As a rule of thumb, this happens in colder water.

Is there a rule of thumb to estimate this?

As a rule of thumb, the expected standard equates to the previous 4B level.

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Similar(2)

A rule-of-thumb chart is presented to predict flow losses for similar installations.

As a rule-of-thumb this limit is at zero.

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