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  2. Vernier scale - Wikipedia

    en.wikipedia.org/wiki/Vernier_scale

    The use of the vernier scale is shown on a vernier caliper which measures the internal and the external diameters of an object. The vernier scale is constructed so that it is spaced at a constant fraction of the fixed main scale. So for a vernier with a constant of 0.1, each mark on the vernier is spaced 9/10 of those on the main scale.

  3. Calipers - Wikipedia

    en.wikipedia.org/wiki/Calipers

    A vernier caliper does not easily lose its calibration, but a sharp impact or accidental damage to the measuring surface in the caliper jaw can be significant enough to displace zero. [29] Digital calipers have zero set buttons, for quick recalibration. Vernier, dial and digital calipers can be used with accessories that extend their usefulness.

  4. First article inspection - Wikipedia

    en.wikipedia.org/wiki/First_article_inspection

    Dimensional characteristics (size, shape, and feature location) are normally inspected using calibrated tools such as Coordinate Measuring Machines (CMMs), Vernier calipers, Go/no go gauges, etc. It may also be a requirement for material testing to be completed, checking the hardness, conductivity and other properties.

  5. Wikipedia : Featured picture candidates/Using the caliper

    en.wikipedia.org/.../Using_the_caliper

    Using a vernier caliper to take measurements on a nut. The 1st two digits are decided by the location of the 0 on the lower scale. The last digit is determined by the 1st line on the lower scale that exactly matches the upper scale.

  6. Pierre Vernier - Wikipedia

    en.wikipedia.org/wiki/Pierre_Vernier

    The main scale reading is the rightmost graduation that is to the left of the zero on the vernier scale. The vernier reading is found by locating the best aligned lines between the two scales. The 0.02 mm engraving indicates the caliper's accuracy and is the "Vernier constant" for this scale. He was born in Ornans, France, in 1580. He was ...

  7. Quality control system for paper, board and tissue machines

    en.wikipedia.org/wiki/Quality_control_system_for...

    A quality control system (QCS) refers to a system used to measure and control the quality of moving sheet processes on-line as in the paper produced by a paper machine. . Generally, a control system is concerned with measurement and control of one or multiple properties in time in a single dimen

  8. Height gauge - Wikipedia

    en.wikipedia.org/wiki/Height_gauge

    The left height gauge has the vernier scale, while the right one is an electronic height gauge with a digital readout. A height gauge is a measuring device used for determining the height of objects, and for marking of items to be worked on.

  9. Abbe error - Wikipedia

    en.wikipedia.org/wiki/Abbe_error

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