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A straightedge is a tool similar to a ruler, but without markings. A variety of rulers A 2 metre carpenters rule Retractable flexible rule A ruler or rule is an instrument used in geometry, technical drawing and engineering/building to measure distances and/or to rule straight lines. ...
Compass-and-straightedge construction
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An idealized straightedge is used in compass-and-straightedge constructions in plane geometry. It may be used: Creating a regular hexagon with a ruler and compass Construction of a regular pentagon Compass and straightedge or ruler-and-compass construction is the construction of lengths or angles using only an idealized ruler and compass. ...
Euclid Euclidean geometry is a mathematical system attributed to the Greek mathematician [[Euclid]] of Alexandria. ...
- Given two points, to draw the line connecting them.
- Given a point and a circle, to draw either tangent.
- Given two circles, to draw any of their common tangents.
It may not be marked or used together with the compass so as to transfer the length of one segment to another. a compass In drafting, a compass (or pair of compasses) is an instrument]] used by mathematicians and craftsmen in for drawing or inscribing a circle or arc. ...
It is possible to do all compass and straightedge constructions without the straightedge. That is, it is possible, using only a compass, to find the intersection of two lines given two points on each, and to find the tangent points to circles. It is not, however, possible to do all constructions using only a straightedge. It is possible to do them with straightedge alone given one circle and its center.
References - Wayne R. Moore, Foundations of Mechanical Accuracy, Moore Special Tool Company, Bridgeport, CT (1970)
External links - Making Accurate Straight-Edges from Scratch
Measuring instruments used in metalworking | | Measuring instruments | Bore gauge · Caliper · Dial indicator · Engineer's blue · Feeler · Fishtail-Center · Gauge blocks · Gauge · Go-NoGo · Machinist square · Marking blue · Marking gauge · Marking out · Micrometer · Radius gauge · Ruler · Sine bar · Spirit level · Straightedge · Surface plate · Tape measure · Thread pitch · Vernier height · Vernier scale · Wiggler Image File history File links Blacksmith-hammer-anvil-50x50. ...
Turned chess pieces Metalworking is the craft and practice of working with metals to create structures or machine parts. ...
A bore gauge is a convenient term for the measuring or transfer tools that are used in the process of accurately measuring holes. ...
For the brake caliper, see disc brake. ...
Dial indicators are instruments used to accurately measure a small distance. ...
Prussian blue is a blue pigment used in paints and formerly in blueprints. ...
Feeler gauge set A feeler gauge is a simple tool used to measure thicknesses. ...
Two different thread setting gauges Fishtail-Center gauges, the left image is a fishtail gauge, the right image is a center gauge. ...
Gauge blocks, (also known as gage blocks, Johansson gauges, or slip gauges) are precision ground and lapped measuring standards. ...
In engineering, a gauge is used to make measurements. ...
A Go NoGo gauge refers to an inspection tool used to check a workpiece against its allowed tolerances. ...
Two typical engineers squares A machinist square or engineers square is the metalworkers equivalent of a try square. ...
Marking Blue is a dye used in metalworking. ...
Stanley and Veritas marking gauges A marking gauge is used in woodworking and metalworking to mark out lines for cutting or other operations. ...
Marking out is a moment of enjoying professional wrestling for what it is rather than analyzing its staged nature, and can be a sought-after experience for fans whose insider knowledge can make them jaded toward its entertainment aspect. ...
Outside, inside, and depth micrometers A micrometer, also known as a micrometer screw gauge, is a widely used device in mechanical engineering for precisely measuring thickness of blocks, outer and inner diameters of shafts and depths of slots. ...
Two types of radius gauges A radius gauge is a tool used to measure the radius of an object. ...
A variety of rulers A 2 metre carpenters rule Retractable flexible rule A ruler or rule is an instrument used in geometry, technical drawing and engineering/building to measure distances and/or to rule straight lines. ...
A sine bar is a tool used to measure angles in metalworking. ...
Engineers spirit level Precision engineers level An engineers spirit level is generally used to level machines although they may be used to level large workpieces on machines such as planers. ...
A surface plate is a solid, flat plate used as the main horizontal reference plane (datum) for precision inspection, marking out (layout), and tooling setup. ...
Self-retracting pocket tape measure plastic tape measure A tape measure or measuring tape is a ribbon of cloth, plastic, or metal with linear-measure markings, often in both imperial and metric units. ...
Three different sets of threading gauges 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. ...
A height gauge is a measuring device used either for determining the height of something, or for repetitious marking of items to be worked on. ...
âVernierâ redirects here. ...
Wiggler Set of wigglers A wiggler, center finder or sticky pin refers to a tool used in the rotating spindle of a machine such as mill or drill. ...
| | Metalworking topics | Casting · CNC · Cutting tools · Drilling and threading · Fabrication · Forging · Grinding · Jewellery · Lathe · Machining · Machine tooling · Measuring · Metalworking · Hand tools · Metallurgy · Milling · Occupations · Press tools · Pipe and tube bending · Smithing · Turning · General terminology · Welding This article is about the manufacturing process. ...
For other uses, see CNC (disambiguation). ...
a Cutting Tool, in the context of Metalworking is any tool that is used to remove metal from the workpiece by means of shear deformation. ...
Drilling is the process of using a drill bit in a drill to produce holes. ...
A typical steel fabrication shop Fabrication, when used as an industrial term, applies to the building of machines , structures, process equipment for chemical, fertilizer sector by cutting, shaping and assembling components made from raw materials. ...
This article is about smithing. ...
Rotating abrasive wheel on a bench grinder. ...
For the Korean music group, see Jewelry (group). ...
Center lathe with DRO and chuck guard. ...
A lathe is a common tool used in machining. ...
A machine tool is a powered mechanical device, typically used to fabricate metal components of machines by the selective removal of metal. ...
The examples and perspective in this article or section may not represent a worldwide view. ...
Turned chess pieces Metalworking is the craft and practice of working with metals to create structures or machine parts. ...
Metalworking hand tools are hand tools that are used in the metalworking field. ...
Georg Agricola, author of De re metallica, an important early book on metal extraction Metallurgy is a domain of materials science that studies the physical and chemical behavior of metallic elements, their intermetallic compounds, and their compounds, which are called alloys. ...
Endmills for a milling machine. ...
It has been suggested that this article or section be merged with Smith (metalwork). ...
Power press with a fixed barrier guard A press, or a machine press is a tool used to work metal (typically steel) by changing its shape and internal structure. ...
A smith, or metalsmith, is a person involved in the shaping of metal objects. ...
Turning, CNC turning, or manual turning is the process used to produce cylindrical components in a lathe. ...
This article needs to be wikified. ...
Welding is a fabrication process that joins materials, usually metals or thermoplastics, by causing coalescence. ...
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