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Metric (SI) units. 25.4 mm. A fire hydrant marked as 3-inch. The inch (symbol: in or ″) is a unit of length in the British Imperial and the United States customary systems of measurement. It is equal to 1 36 yard or 1 12 of a foot. Derived from the Roman uncia ("twelfth"), the word inch is also sometimes used to translate ...
1 inch = 2.54 cm or 1 ⁄ 12 foot, 1 ⁄ 24 pic, or 1 ⁄ 36 yard 1 foot = 30.48 cm or 12 inches, 1 ⁄ 2 pic, or 1 ⁄ 3 yard 1 yard = 0.9144 m or 3 feet, or 1 + 1 ⁄ 2 pics 1 chain = 20.1168 m or 66 feet, 33 pics, or 22 yards 1 mile = 1.609344 km or 5280 feet, 2640 pics, 1760 yards, or 80 chains
This was formalized in 1893 by the Mendenhall Order,: 379–81 with the conversion in accordance with the Metric Act of 1866 (as 1 meter = 39.37 inches,: 340 which corresponds to 1 inch = 2.5400051… centimeters). This value was adjusted in 1959 to its present value of 1 inch = 2.54 centimeters (or, 1 yard = 0.9144 meters), exactly.
The centimetre (SI symbol: cm) is a unit of length in the metric system equal to 10−2 metres (100m = 0.01 m). To help compare different orders of magnitude, this section lists lengths between 10 −2 m and 10 −1 m (1 cm and 1 dm). 1 cm – 10 millimetres. 1 cm – 0.39 inches. 1 cm – edge of a square of area 1 cm 2.
Metre-stick. A metrestick divided into 1,000 mm and labeled with 100 cm. A metre-stick, metrestick (or meter-stick and meterstick as alternative spellings); [1] or yardstick[2] is either a straightedge or foldable ruler used to measure length, and is especially common in the construction industry. They are often made of wood or plastic, and ...
2 cm — approximate width of an adult human finger; 2.54 cm — 1 inch; 3.1 cm — 1 attoparsec (10 −18 parsecs) 3.5 cm — width of film commonly used in motion pictures and still photography; 4.3 cm — minimum diameter of a golf ball [32] 7.3-7.5 cm — diameter of a baseball [33] 8.6 cm × 5.4 cm — dimensions of a typical credit card [34]
A centimetre (International spelling) or centimeter (American spelling), with SI symbol cm, is a unit of length in the International System of Units (SI) equal to one hundredth of a metre, centi being the SI prefix for a factor of 1 100 . [1] Equivalently, there are 100 centimetres in 1 metre. The centimetre was the base unit of length ...
Traditional Swedish units of measurement were standardized by law in 1665, prior to which they only existed as a number of related but differing local variants. The system was slightly revised in 1735. In 1855, a decimal reform was instituted that defined a new Swedish inch as 1⁄10 Swedish foot (2.96 cm or 1.17 inches).