Straightedge
A straightedge or straight edge is a tool used for drawing straight lines, or checking their straightness. If it has equally spaced markings along its length, it is usually called a ruler. Straightedges are used in the automotive service and machining industry to check the flatness of machined mating surfaces. True straightness can in some cases be checked by using a laser line level as an optical straightedge: it can illuminate an accurately straight line on a flat surface such as the edge of a plank or shelf.
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434 BC5th century BCAngle trisectionButt jointCame glassworkCaspar David Friedrich in his StudioChalk lineCombination squareDrawingElementary mathematicsEngineering drawingField (mathematics)GirihGothic boxwood miniatureHorseshoesJean-Victor PonceletJordan HallidayLaser line levelList of geometry topicsMarking knifeMathematical instrumentMeterstickNonagonOctagonPierpont primePoncelet–Steiner theoremProjective geometryRamesses IX Tomb-plan OstraconRolling straight-edgeRule of marteloioScalpelScoring knifeSet squareSquare (tool)StonemasonryStraightStraightedge and compass constructionSurface plateTangent lines to circlesTechnical drawing
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Straightedge
A straightedge or straight edge is a tool used for drawing straight lines, or checking their straightness. If it has equally spaced markings along its length, it is usually called a ruler. Straightedges are used in the automotive service and machining industry to check the flatness of machined mating surfaces. True straightness can in some cases be checked by using a laser line level as an optical straightedge: it can illuminate an accurately straight line on a flat surface such as the edge of a plank or shelf.
has abstract
A straightedge or straight edg ...... wist (wind) in pieces of wood.
@en
Een rei is een lange lat voor ...... den van bijvoorbeeld linoleum.
@nl
En rätskiva, rätbräde eller rä ...... al utan krav på måttgradering.
@sv
Haarlineale und Haarwinkel sin ...... einem kleinen Radius versehen.
@de
直定規(ちょくじょうぎ、英:A straightedge o ...... 規は、木片のねじれを増幅するために木工作業で使用されている。
@ja
直尺,亦稱為間尺,是一種用於量度長度的儀器或文具。這種文具極 ...... 出無窮長的直線,是不能有刻度的。但現今的直尺通常泛指刻度尺。
@zh
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A straightedge or straight edg ...... the edge of a plank or shelf.
@en
Een rei is een lange lat voor ...... orte betonvloer vlak te maken.
@nl
En rätskiva, rätbräde eller rä ...... al utan krav på måttgradering.
@sv
Haarlineale und Haarwinkel sin ...... m Prüfen der Rechtwinkligkeit.
@de
直定規(ちょくじょうぎ、英:A straightedge o ...... 規は、木片のねじれを増幅するために木工作業で使用されている。
@ja
直尺,亦稱為間尺,是一種用於量度長度的儀器或文具。這種文具極 ...... 出無窮長的直線,是不能有刻度的。但現今的直尺通常泛指刻度尺。
@zh
label
Haarlineal
@de
Rei (gereedschap)
@nl
Rätskiva
@sv
Straightedge
@en
直定規
@ja
直尺
@zh