Perch (Unit)
Area, Rod (Unit), England
978-613-8-78585-9
6138785851
108
2012-01-20
39.00 €
eng
https://images.our-assets.com/cover/230x230/9786138785859.jpg
https://images.our-assets.com/fullcover/230x230/9786138785859.jpg
https://images.our-assets.com/cover/2000x/9786138785859.jpg
https://images.our-assets.com/fullcover/2000x/9786138785859.jpg
Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. A perch is as a unit of measurement used for length, area, and volume in a number of systems of measurement. Its name derives from the Ancient Roman unit, the pertica.In England, the perch was officially discouraged in favour of the rod as early as the 15th century, however local customs maintained its use. In the 13th Century Perches were variously recorded in lengths of 18 feet (5.49 m), 20 feet (6.1 m), 22 feet (6.71 m) and 24 feet (7.32 m); and even as late as 1820, a House of Commons report notes lengths of 16.5 feet (5.03 m), 18 feet (5.49 m), 21 feet (6.4 m), 24 feet (7.32 m), and even 25 feet (7.62 m). In Ireland, a perch was standardized at 21 feet (6.4 m), making an Irish chain, furlong and mile proportionately longer by 27.27% than the "standard" English measure.
https://www.morebooks.de/books/cn/published_by/onym-press/193158/products
综合社会科学
https://www.morebooks.de/store/cn/book/perch-unit/isbn/978-613-8-78585-9