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 Ledger art Ledger art is a term for Plains Indian narrative drawing or painting on paper or cloth. Ledger art flourished primarily from the 1860s to the 1920s. A revival of ledger art began in the 1960s and 1970s. The term comes from the accounting ledger books that were a common source of paper for Plains Indians during the late 19th century. Ledger art evolved from Plains hide painting. Among Plains tribes, women traditionally paint abstract, geometrical designs, whereas men paint representational designs. The men's designs were often heraldic devices or visions painted on shields, tipis, shirts, leggings, or robes.