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How about the inch. I know when you say your height, in US, you use feet + inches. And inch is defined also in regards to meter (2.54 cm) but also in regards to
by unnouinceput 6y ago
How about the inch. I know when you say your height, in US, you use feet + inches. And inch is defined also in regards to meter (2.54 cm) but also in regards to foot (12 inches == one foot). The what kind of foot is used, and does the inch then varies in length as well?
- shawnz 6y agoThere have been many different standards for both inches and feet. What this article calls the "international foot" is based on the 2.54cm inch.
- masklinn 6y agoThe issue here is the surveyor's foot, which as its name indicates is only used for surveying (and corresponds to the pre-metrication foot). That's like nautical miles. If you're in a nautical context "mile" can be ambiguous, but if you're not then it's just the mile (well except there's also a survey mile). Anyway the answer to your question is that in 1959 all non-metric units of length (and weight) were standardised internationally and defined in terms of metric units. So outside of specific contexts (like surveying), an inch is 2.54cm and a foot is 12 inches of 2.54cm or 30.48cm. The "reference" unit is actually the international yard at 91.44cm, with there being 3ft to a yard, and 12in to an ft.