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  2. Chevron (insignia) - Wikipedia

    en.wikipedia.org/wiki/Chevron_(insignia)

    A chevron (also spelled cheveron, especially in older documents) is a V-shaped mark or symbol, often inverted.The word is usually used in reference to a kind of fret in architecture, or to a badge or insignia used in military or police uniforms to indicate rank or length of service, or in heraldry and the designs of flags (see flag terminology).

  3. List of measuring instruments - Wikipedia

    en.wikipedia.org/wiki/List_of_measuring_instruments

    Many measurement devices outside this section may be used or at least become part of an identification process. For identification and content concerning chemical substances, see also Analytical chemistry , List of chemical analysis methods , and List of materials analysis methods .

  4. Category:Measuring instruments - Wikipedia

    en.wikipedia.org/wiki/Category:Measuring_instruments

    Pages in category "Measuring instruments" The following 200 pages are in this category, out of approximately 375 total. This list may not reflect recent changes .

  5. Venturi effect - Wikipedia

    en.wikipedia.org/wiki/Venturi_effect

    This type of pressure measurement may be more convenient, for example, to measure fuel or combustion pressures in jet or rocket engines. The first large-scale Venturi meters to measure liquid flows were developed by Clemens Herschel who used them to measure small and large flows of water and wastewater beginning at the end of the 19th century. [3]

  6. Reticle - Wikipedia

    en.wikipedia.org/wiki/Reticle

    A reticle, or reticule [1] [2] also known as a graticule, is a pattern of fine lines or markings built into the eyepiece of an optical device such as a telescopic sight, spotting scope, theodolite, optical microscope or the screen of an oscilloscope, to provide measurement references during visual inspections.

  7. Dimensional metrology - Wikipedia

    en.wikipedia.org/wiki/Dimensional_metrology

    Standardized measurements are essential to technological advancement, and early measurement tools have been found dating back to the dawn of human civilization. [1] Early Mesopotamian and Egyptian metrologists created a set of measurement standards based on body parts known as anthropic units. These ancient systems of measurements utilized ...

  8. Gauge (instrument) - Wikipedia

    en.wikipedia.org/wiki/Gauge_(instrument)

    a device used to measure the strain of an object. Thread pitch gauge, also called a threading gauge, pitch gauge, or screw gauge a device used to measure the pitch or lead of screw threads. Vernier height gauge: a measuring device used either for determining the height of something, or for repetitious marking of items to be worked on.

  9. Deformation monitoring - Wikipedia

    en.wikipedia.org/wiki/Deformation_monitoring

    Geodetic measuring devices measure georeferenced (relative to established locations outside the monitoring area) displacements or movements in one, two or three dimensions. It includes the use of instruments such as total stations , levels , InSAR , [ 2 ] and global navigation satellite system receivers .