Glossary, ContinuedR (Continued)RULING PEN— An instrument that holds ink between two adjustable blades.RUNNING HEAD— The title repeated at the top of consecutive pages in abook or magazine.SSABLE BRUSH— A flat or round-shaped brush made from the tail hair of aKolinsky (Asiatic) mink.SAFELIGHT— A colored light used to illuminate a darkroom withoutharming photosensitive film or paper.SANDPAPER PAD— A pad of sandpaper sheets mounted on a strip of woodused to sharpen a pencil lead or pastel.SANS SERIF— Without serifs, a letter that does not have a finishing stroke.SATURATION— The purity or intensity of color.SCALE— (1) Proportions or relative dimensions; (2) To enlarge or reducewithout changing the original proportions.SCALE CLIP— A clip attached to a scale that focuses on the scale currentlyin use.SCALE DRAWING— A drawing that shows relative sizes and proportions.SCALING— Also called DIMENSIONING or SIZING. Enlarging orreducing copy or an image to the correct dimensions to occupy a given area.SCANNING AREA— The total area or picture that the camera sees.SCRAP FILE— See RESEARCH FILE.SCRATCHBOARD— A type of illustration board with a chalky surfaceuniformly covered with ink.Continued on next pageAI-53
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