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In manufacturing and mechanical engineering, flatness is an important geometric condition for workpieces and tools. Flatness is the condition of a surface or derived median plane having all elements in one plane. [1] Geometric dimensioning and tolerancing has provided geometrically defined, quantitative ways of defining flatness operationally.
Sir Joseph Whitworth, 1st Baronet (21 December 1803 – 22 January 1887) was an English engineer, entrepreneur, inventor and philanthropist. [2] In 1841, he devised the British Standard Whitworth system, which created an accepted standard for screw threads. [3]
In this process, three approximately flat surfaces are progressively refined to precise flatness by manually rubbing them against each other in pairs with colouring matter in between, and then hand-scraping the high points. Any errors of flatness are removed by this scraping, since the only stable, mutually conjugate surface shape is a plane.
Engineer's blue is prepared by mixing Prussian blue with a non-drying oily material (for example, grease).The coloured oil is rubbed onto a reference surface, and the workpiece is then rubbed against the coloured reference; the transfer (by contact) of the pigment indicates the position of high spots on the workpiece or conversely highlight low points. [1]
British Standard Whitworth (BSW) is an imperial-unit-based screw thread standard, devised and specified by Joseph Whitworth in 1841 and later adopted as a British Standard. It was the world's first national screw thread standard, and is the basis for many other standards, such as BSF , BSP , BSCon , and BSCopper .
Flatness may refer to: Flatness (art) Flatness (cosmology) Flatness (liquids) Flatness (manufacturing), a geometrical tolerance required in certain manufacturing situations; Flatness (systems theory), a property of nonlinear dynamic systems; Spectral flatness; Flat intonation; Flat module in abstract algebra; Flat morphism in category theory
It's 28-20 Rams with 6:17 remaining in the game. Will Reichard remains perfect, pulls Vikings within one. Through seven games, the rookie kicker is a perfect 14-for-14 on field goal attempts and ...
The purpose of a cast iron master is to provide a flat surface; a surface, when flat, will be flat at 20 C and flat at 30 C, though dimensionally larger at 30 C than at 20 C. From this stable, accurate surface, you can then transfer the flatness or parallelism from the cast iron surface to the granite surface, for use in laboratory equipment.