Mun riga munyi magana a kan abubuwan da suka gabata game da Tsarin takarda ISo an tsara shi a cikin 1922 ta hanyar ISO 216 misali kuma injiniyar Bajamushe Dr. Walter Portmann. Amma a yawancin Amurka, Amurka, Kanada da Meziko, ba a sarrafa su ta hanyar wadannan takardu, amma suna da teburin auna su kuma an daidaita su ta ANSI (American National Standards Insitute) a 1995, abin da ake kira Anglo-Saxon gwargwado. Sauran ƙasashe, kamar Peru, suna amfani da ƙa'idodin biyu ba tare da ɓoyewa ba kuma a layi ɗaya ga siffofin su.
Matakan takarda na Amurka sune kamar haka: Harafi (216 x 279 mm); Doka (216 x 356 mm); Junior Legal (127 x 203 mm); Tabloid (279 x 432 mm)
A gefe guda, Jafananci ba sa bin kowace ƙa'idodin ƙa'idodin da muka riga muka yi magana game da su, suna da teburin ma'aunin takaddun nasu wanda ya sha bamban da duk waɗanda suka gabata, kuma ba a amfani da su a Turai da Amurka:
Idan kuna son sauya fasalin takarda, ina baku shawara da ku shiga wannan shafin, zai iya zama babban taimako a lokuta da dama, yana da amfani kuma mai sauki ne, kuma ana iya amfani dashi don canza wasu nau'ikan ma'auni ko ago, shi yana da zaɓuɓɓuka masu amfani da yawa: convertworld.com
rubutu da hotuna: littafin aiki, girman takarda, launuka huɗu na rayuwa