Engineering drawing drawing on A3 may be enlarged to A2 or reduced to A4. The U.S. customary "A-size" corresponds to "letter" size, and "B-size" corresponds to "ledger" or "tabloid" size. There were also once British paper sizes, which went by names rather than alphanumeric designations. American Society of Mechanical Engineers (ASME) ANSI/ASME Y14.1, Y14.2, Y14.3, and Y14.5 are commonly referenced standards in the U.S. Technical lettering is the process of forming letters, numerals, and other characters in technical drawing. It is used to describe, or provide detailed specifications for an object. With the goals of legibility and uniformity, styles are standardized and
Ledger art this style to illustrate cultural continuity between historical and contemporary Native life. Missionaries, anthropologists, and tourists eagerly collected ledger books in the late 19th century. Carl Sweezy (1881–1953) (Arapaho) and "Haungooah" (Silver Horn) (1860–1940) (Kiowa) both established professional careers as ledger artists. They inspired the Kiowa Five or, as they are increasingly known, the Kiowa Six. These artists painted with more sophisticated materials and met with international success when they exhibited their work in the 1928 International Art Congress in Prague, Czechoslovakia. Numerous modern Plains artists create ledger paintings, including many women artists despite its history as a male domain.