surface of the workpiece to leave a shallow scratch on its surface.
Due to the nature of metal, and the accuracy generally sought after when machining it, a thick pencil or ink line would either be impossible to lay down accurately or prone to erasure during the machining operation. The crisp, bright mark exposed by the scratch of a scriber is semi-permanent and thin. The process of using the scriber is referred to as
marking outand may require the addition of other hand tools and equipment.
Usually a layout stain of some form is used to increase the contrast between the scribed line and the background surface and is washed off with solvent on completion.
A scriber block is used to layout at a set height from the base, thus its second name
surface height gaugeor just "surface gauge".
The work piece is held against an
angle plateso that it is perpendicularto the surface plate, the scriber block is then adjusted to the required height and used to scribe a line parallel with the table, by sliding the block along the table's surface.
The scriber block has pins that can be pushed to protrude through the base, these can then be used as limit pins to allow the block to press against the edge of the table, controlling its movement in that plane. The upright post can be adjusted to tilt back or forward, effectively moving the scriber point up or down in a controlled fashion, coarse adjustments are made by sliding the scriber along its clamping block.
The scriber block may also be used in place of a Dial Test Indicator to detect "run out" (a variation in
concentricity) of a workpiece mounted in a 4 jaw chuck. The scriber point acts as a visual reference against which any variation in the work piece can be judged.
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Look at other dictionaries:
Scriber — Scrib er, n. A sharp pointed tool, used by joiners for drawing lines on stuff; a marking awl. [1913 Webster] … The Collaborative International Dictionary of English
Scriber — Inhaltsverzeichnis 1 Beschriftungsgerät für Technische Zeichnungen 2 Funktionsweise und Anwendung 3 Geschichte 4 Verwendung … Deutsch Wikipedia
scriber — raižytuvas statusas T sritis radioelektronika atitikmenys: angl. scriber; scribing installation vok. Ritzvorrichtung, f rus. скрайбер, m; установка скрайбирования, f pranc. installation de rayure, f … Radioelektronikos terminų žodynas
scriber — rėžiklis statusas T sritis radioelektronika atitikmenys: angl. scriber vok. Ritzwerkzeug, n rus. резец, m pranc. gratteur, m … Radioelektronikos terminų žodynas
scriber — noun Date: circa 1836 a sharp pointed tool for making marks and especially for marking off material (as wood or metal) to be cut … New Collegiate Dictionary
scriber — /skruy beuhr/, n. a tool for scribing wood or the like. Also, scribe. [1825 35; SCRIBE2 + ER1] * * * … Universalium
Scriber — Чертёжник гравёр; Гравировальная игла; гравировальный резец … Краткий толковый словарь по полиграфии
scriber — scribÂ·er || skraÉªbÉ™(r) n. sharp awl used for outlining designs on metalwork or wood … English contemporary dictionary
scriber — scrib·er … English syllables
scriber — scrib•er [[t]ˈskraɪ bər[/t]] n. bui a tool for scribing wood or the like • Etymology: 1825–35 … From formal English to slang