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A 250 mm x 250 mm surface plate
A surface plate is a solid, flat plate used as the main horizontal reference plane for precision inspection, marking out (layout), and tooling setup.[1] The surface plate is often used as the baseline for all measurements to a workpiece, therefore one primary surface is finished extremely flat with tolerances below 11.5 μm or 0.0115 mm per 2960 mm for a grade 0 plate.[2] Surface plates are a common tool in the manufacturing industry and are often fitted with mounting points so that it can be an integrated structural element of a machine such as a coordinate-measuring machine, precision optical assembly, or other high precision scientific & industrial machine. Plates are typically square or rectangular, although they may be cut to any shape.
^Parker, Dana T. Building Victory: Aircraft Manufacturing in the Los Angeles Area in World War II, p. 82, Cypress, CA, 2013. ISBN 978-0-9897906-0-4
A surfaceplate is a solid, flat plate used as the main horizontal reference plane for precision inspection, marking out (layout), and tooling setup. The...
of one plate down under the other plate and into the mantle. This process reduces the total surface area (crust) of the Earth. The lost surface is balanced...
lapping plate and the dial on the front of the jig indicates the amount of material removed from the specimen. Where the mating of the two surfaces is more...
boundary) is an area on Earth where two or more lithospheric plates collide. One plate eventually slides beneath the other, a process known as subduction...
varied as the terrain above sea level. Earth's surface is continually being shaped by internal plate tectonic processes including earthquakes and volcanism;...
used as a heat source in laboratories. A hot plate can have a flat surface or round surface. Hot plates can be used for traveling or in areas without...
tectonic plates on Earth's surface. Tectonic plates are pieces of Earth's crust and uppermost mantle, together referred to as the lithosphere. The plates are...
designs apply a compression force once either a handle (PGA type) or a surfaceplate (LGA type) is put into place. This provides superior mechanical retention...
lithosphere of a tectonic plate converges with the less dense lithosphere of a second plate, the heavier plate dives beneath the second plate and sinks into the...
A Wilhelmy plate is a thin plate that is used to measure equilibrium surface or interfacial tension at an air–liquid or liquid–liquid interface. In this...
several plates in each hand spinning on sticks. Plate waltzing is where plates are spun on their edges on a table top or similar surface. Plate juggling...
name surface height gauge or just surface gauge. The workpiece is held against an angle plate so that it is perpendicular to the surfaceplate; the scriber...
non-corrosive ink all over and the surface ink drained and wiped clean, leaving ink in the etched forms. The plate is then put through a high-pressure...
with digital display), whereas a surface gauge has only a scriber point. Both are typically used on a surfaceplate and have a heavy base with an accurately...
does not control twist. For accurate calibration of a straight edge, a surfaceplate must be used. An idealized straightedge is used in compass-and-straightedge...
printing is from a stone (lithographic limestone) or a metal plate with a smooth surface. It was invented in 1796 by the German author and actor Alois...
tensor veli palatini glides. The lateral surface of this plate forms part of the pterygoid fossa, the medial surface constitutes the lateral boundary of the...
registration plate, also known as a number plate (British, Indian and Australian English) or license plate (American English) or licence plate (Canadian...
while wet, it is ideal for coating stable surfaces such as glass or metal for photography. When a metal plate is coated with collodion, charged with silver...
was coined by Swiss physician Hans Jenny (1904–1972). Typically the surface of a plate, diaphragm, or membrane is vibrated, and regions of maximum and minimum...
The African Plate, also known as the Nubian Plate, is a major tectonic plate that includes much of the continent of Africa (except for its easternmost...
Surface activity may refer to Stellar magnetic field § Surface activity Plate tectonics, a form of planetary surface activity Surfactant, a surface active...
below the surface. On Earth, volcanoes are most often found where tectonic plates are diverging or converging, and because most of Earth's plate boundaries...
smooth-surfacedplate armours. Unlike plate they made no attempt to be bulletproof. Jacks were often made from recycled pieces of older plate armor, including...
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