Metalworking measuring instruments

A bore gauge is a convenient term for the measuring or transfer tools that are used in the process of accurately measuring holes. ...more on Wikipedia about "Bore gauge"

:A caliper can refer to a component of a disc brake. This article is concerned with the measuring and layout tool. ...more on Wikipedia about "Caliper"

Dial indicators are instruments used to accurately measure a small distance. They may also be known as a Dial gauge, Dial Test Indicator (DTI) or as a "clock". ...more on Wikipedia about "Dial indicator"

An engineer's scale is a ruler, a tool for measuring distances. It is commonly made of plastic and is just over twelve inches long, so that the measuring ticks at the edges do not become unusable by wearage. It is used in making engineering drawings, commonly called blueprints, in scale. For example, "one-tenth size" would appear on a drawing to indicate a part larger than the paper itself. It is not to be used to measure the machined parts to see if these meet the specifications. ...more on Wikipedia about "Engineer's scale"

A feeler gauge is a simple tool used to measure thicknesses. Feeler gauges are mostly used in engineering to measuring the clearance between two parts. ...more on Wikipedia about "Feeler gauge"

Fishtail-Center gauges, the left image is a fishtail gauge, the right image is a center gauge. ...more on Wikipedia about "Fishtail-Center gauge"

In engineering, a gauge is used to make measurements. Various types of gauges include: ...more on Wikipedia about "Gauge (engineering)"

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Gauge blocks (also known as gage blocks, Johansson gauges, or slip gauges) are precision ground and lapped measuring standards. They are used as references for the setting of measuring equipment such as micrometers, sine bars, dial indicators (when used in an inspection role). ...more on Wikipedia about "Gauge blocks"

A Go NoGo gauge refers to an inspection tool used to check a workpiece against its allowed tolerances. It is an integral part of the quality process that is used in the manufacturing industry to ensure interchangeability of parts between processes, or even between different manufacturers. ...more on Wikipedia about "Go-NoGo gauge"

A machinist square or engineer's square is the metalworkers' equivalent of a try square. It consists of a steel blade inserted and either welded or pinned into a heavier body at an angle of 90 °. In the accompanying image, there is evidence of pinning at the intersection of the blade and body, where the heads of two pins are visible as dark circles. ...more on Wikipedia about "Machinist square"

Marking Blue, Layout Stain or Prussian blue is a dye used in metalworking to aid in marking out rough parts for further machining. It is used to stain or paint a metal object with a very thin layer of dye that can be scratched off using a scriber or other sharp instrument to reveal a bright, yet very narrow line in the metal underneath. The advantages are that any existing scratches are covered with the dye and the new lines have a contrasting background. ...more on Wikipedia about "Marking blue"

A marking gauge is used in woodworking and metalworking to mark out lines for cutting or other operations. ...more on Wikipedia about "Marking gauge"

Marking out is the process of transferring a design or pattern to a workpiece, as the first step in the manufacturing process. It is performed in many industries or hobbies although in the repetition industries the machine's initial setup is designed to remove the need to mark out every individual piece. ...more on Wikipedia about "Marking out"

A micrometer is a widely used device in mechanical engineering for precisely measuring thickness of blocks, outer and inner diameters of shafts and depths of slots. Appearing frequently in metrology, the study of measurement, micrometers have several advantages over other types of measuring instruments like the Vernier caliper - they are easy to use and their readouts are consistent. ...more on Wikipedia about "Micrometer"

Prussian blue (Preußisch Blau, Berliner Blau) is a dark blue pigment used in paints and formerly in blueprints. It has several different chemical names, these being iron(III) ferro cyanide, ferric ferrocyanide, iron(III) hexacyanoferrate(II), and ferric hexacyanoferrate. Prussian blue is a strong color, and tends towards black and dark purple when mixed with other oil paints. ...more on Wikipedia about "Prussian blue"

A radius gauge is a tool used to measure the radius of an object. ...more on Wikipedia about "Radius gauge"

:This article is about the drawing and measuring instrument. Ruler can also refer to a statesman in charge or ceremonial head of state of a country or minor politically significant principality; for this meaning see Monarch or Lists of incumbents. ...more on Wikipedia about "Ruler"

A sine bar is a tool used to measure angles in metalworking. ...more on Wikipedia about "Sine bar"

An engineers spirit level is generally used to level machines although they may be used to level large workpieces on machines such as planers. Spirit levels are also used in building construction, by carpenters and masons. ...more on Wikipedia about "Spirit level (Engineers)"

A straightedge is a tool similar to a ruler, but without markings. ...more on Wikipedia about "Straightedge"

A surface plate is a solid, flat table that can be confidently used as a datum for marking out, measuring workpieces, or setting up tooling. Considering that it is the baseline for all future measurements and that tolerances as low as +/- 1 micrometre may be in use, its precision is critical. ...more on Wikipedia about "Surface plate"

A tape measure or measuring tape is a ribbon of cloth, plastic, or metal with ...more on Wikipedia about "Tape measure"

Threading gauges, pictured on the right, are also referred to as pitch gauges and are used to measure the pitch or lead of screw threads. The uppermost gauge in the image is a metric or ISO pitch gauge, The larger gauge in the center is for measuring the Acme Thread Form, the lower gauge is for imperial screws. ...more on Wikipedia about "Thread pitch gauge"

A vernier height gauge is a height gauge with the additional refinement of a vernier scale for greater accuracy in reading or setting the tool ...more on Wikipedia about "Vernier height gauge"

A vernier scale lets one read more precisely from an evenly divided straight or circular measurement scale. It is fitted with a sliding secondary scale that is used to indicate where the measurement lies when it is in-between two of the marks on the main scale. ...more on Wikipedia about "Vernier scale"

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