Bookbinding and the Conservation of Books
A Dictionary of Descriptive Terminology

 Previous item  Up One Level Next item


1. One thousandth of an inch. The point is used in expressing the thickness of paper or board, as well as other materials, but not leather. See: LEATHER SUBSTANCE TABLE . 2. The expression of certain values of the properties of paper, e.g., points per pound, or pounds per point. 3. The unit of measure for printer's type. A point is approximately 1/72 inch, 12-point type, for example, being 12/72 or 1/6 inch in body. One inch equals 72.25433 points, while 72 points equal 0.9962 inch. The width of a line of type (or "measure") is determined in pica (12-point) ems. The depth of a page of type is similarly measured in picas or ems. 4. A book collector's term for a particular characteristic of text, type, form, etc., that distinguishes states, issues, and editions from one another. 5. A thin piece of metal with a point projecting from one end, and secured at its other end to the tympans of some printing presses; it is used to insure accurate register in feeding. 6. A mark or hole made on or in sheets in printing to serve as a guide in folding. (17 , 42 , 156 )

[Search all CoOL documents]

URL: http://