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
American Letter Mail Company Company was a vehicle for legal challenge. "Mr. Spooner, the head of the American Letter Mail Company, has transmitted to the Department at Washington, a written admission of his conveyance of letters, &c., with all the necessary facts in the case, to make it a purely legal question, so that the Postmaster General has nothing to do but take the whole subject to the Supreme Court of the United States, as soon as it can be got there." The American Letter Mail Company was able to reduce the price of its stamps significantly and even offered free local delivery, significantly