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Download as PDF; Printable version; In other projects ... 4Pi may refer to: IBM System/4 Pi, a family of avionics computers; 4Pi microscope, a microscope ...
It is used as a reference for the setting of measuring equipment used in machine shops, such as micrometers, sine bars, calipers, and dial indicators (when used in an inspection role). Gauge pin is similar to a gauge block. It is a precision ground cylindrical bar for use in Go/no go gauges or similar applications. Go/no go gauge
A variety of rulers A carpenter's rule Retractable flexible rule or tape measure A closeup of a steel ruler A ruler in combination with a letter scale. A ruler, sometimes called a rule, scale or a line gauge or metre/meter stick, is an instrument used to make length measurements, whereby a length is read from a series of markings called "rules" along an edge of the device. [1]
A reference dimension is a dimension on an engineering drawing provided for information only. [1] Reference dimensions are provided for a variety of reasons and are often an accumulation of other dimensions that are defined elsewhere [2] (e.g. on the drawing or other related documentation). These dimensions may also be used for convenience to ...
Illustration of a typometer. The upper edge is marked with millimeters, half centimeters and centimeters; the lower edge is marked with a typographic point scale in groups of three, six and twelve points (one quarter cicero, half a cicero and one cicero) Front and back of an old metal typometer with a hook for manual type setting Plastic typometers, from the 1980s, with different scales
The contemporary computer PostScript pica is exactly 1 ⁄ 6 of an inch or 1 ⁄ 72 of a foot, i.e. 4.2 3 mm or 0.1 6 in. Publishing applications such as Adobe InDesign and QuarkXPress represent pica measurements with whole-number picas left of a lower-case p, followed by the points number, for example: 5p6 represents 5 picas and 6 points, or 5 ...
Agate: A small size of printing-type, between pearl and nonpareil, half the size of small pica. A little over thirteen lines go to the inch. By the point system, it corresponds to five and a half points. Its chief use is for advertisements and market reports in daily papers, on which it is generally the smallest size used.