Inch FAQs:

Q: Is an inch also sometimes used to translate related units in other measurement systems?

A: Yes, and usually understood as deriving from the width of the human thumb.

Q: Was an inch defined in terms of the Imperial Standard Yard?

A: Yes.

Q: Is an inch a commonly used customary unit of length in the United States?

A: Yes, and Canada, and the United Kingdom.

Q: Was an inch equal to 3 barleycorns?

A: Yes, and which continued to be its legal definition for several centuries, with the barleycorn being the base unit.

Q: Is an inch in but traditionally the inch is denoted by a double prime?

A: Yes, and which is often approximated by double quotes, and the foot by a prime, which is often approximated by an apostrophe.

Q: Is an inch used informally as a measure for display screens too?

A: Yes.