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Definitions (74)
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cosine error
The measurement error in the motion direction caused by an angular misalignment between a linear displacement measuring system and the gage or displacement being measured.
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lateral axis
A measuring axis, common on Pinpoint products, where the measurement is made across the centerline or longitudinal axis of a laser reference beam. The lateral axis can include measurements that might be up or down or perhaps left or right across the laser beam.
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accuracy
Accuracy is the ability of a measuring device or instrument to provide repeatable or precise measuring values to a known standard or constant value. This term is sometimes confused with “precision” or “repeatability”. A simple analogy that we like to refer to here at Pinpoint is the case of a marksman shooting at a distant target. If this marksman [..]
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air turbulence
Air, moving around a measurement site, creates regions of turbulence with high and low pressure cells. These are momentary in nature because the high and low pressure tends to seek equilibrium. A ray of light or a laser beam can be refracted as it passes through a region of high or low pressure because the increased density of the medium that the l [..]
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arc-minute
A measure of angle equivalent to 1/60 of a degree or 0.01666 degrees.
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arc-second
A measure of angle corresponding to 1/3600 of a degree or 0.00028 degrees. A degree of angle can be subdivided into 60 parts called minutes. Each minute of arc can be further sub-divided into 60 parts called arc-seconds.
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alignment
The process or science of orienting machinery, machine alignment – or equipment so it is positioned and spatially oriented to other machinery or sub-assemblies relative to defined features or datums.
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angular error
This is an alignment error that is angular in nature and tends to change with distance traveled. For example, if a moving machine bed travels 60 inches and its surface rises steadily in height as it travels on a horizontal plane it is said to have an angular error. As the distance between two aligned elements increases the magnitude of the angular [..]
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averaging interval
If data readings are being collected and averaged, the averaging interval is the time period during which a sample of readings are taken and then averaged.
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axial
A term referring to an axis of motion, movement or alignment.
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