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  2. Cave survey - Wikipedia

    en.wikipedia.org/wiki/Cave_survey

    Hydrolevelling is an alternative to measuring depth with clinometer and tape that has a long history of use in Russia. [4] The technique is regularly used in building construction for finding two points with the same height, as in levelling a floor.

  3. Rack unit - Wikipedia

    en.wikipedia.org/wiki/Rack_unit

    Rack with sample component sizes including an A/V half-rack unit. A rack unit (abbreviated U or RU) is a unit of measure defined as 1 + 3 ⁄ 4 inches (44.45 mm). [1] [2] It is most frequently used as a measurement of the overall height of 19-inch and 23-inch rack frames, as well as the height of equipment that mounts in these frames, whereby the height of the frame or equipment is expressed ...

  4. 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 ...

  5. List of unusual units of measurement - Wikipedia

    en.wikipedia.org/wiki/List_of_unusual_units_of...

    [25] [26] The standard FIFA football pitch for international matches is 105 m (344 ft) long by 68 m (223 ft) wide (7,140 m 2 or 0.714 ha or 1.76 acres); FIFA allows for a variance of up to 5 m (16.4 ft) in length in either direction and 7 m (23.0 ft) more or 4 m (13.1 ft) less in width (and larger departures if the pitch is not used for ...

  6. Papanasini Siva Temple - Wikipedia

    en.wikipedia.org/wiki/Papanasini_Siva_Temple

    Gandi 1.15 metres and mastaka measures 0.95 metres. Raha niche & parsva devatas: The parsvadevata niches in north, west and eastern walls measure 0.40 metres in height x 0.28 metres in width x 0.10 metres depth. All the niches are empty. Decorative features: — Door Jambs: The doorjambs measuring 1.58 metres x 0.73 metres are plain.

  7. Surface metrology - Wikipedia

    en.wikipedia.org/wiki/Surface_metrology

    The assessment length or evaluation length is the length of data that will be used for analysis. Commonly one sampling length is discarded from each end of the measurement length. 3D measurements can be made with a profilometer by scanning over a 2D area on the surface.

  8. Length - Wikipedia

    en.wikipedia.org/wiki/Length

    Width and breadth usually refer to a shorter dimension than length. Depth is used for the measure of a third dimension. [2] Length is the measure of one spatial dimension, whereas area is a measure of two dimensions (length squared) and volume is a measure of three dimensions (length cubed).

  9. Slenderness ratio - Wikipedia

    en.wikipedia.org/wiki/Slenderness_ratio

    Structural engineers generally consider a skyscraper as slender if the height:width ratio exceeds 10:1 or 12:1. Slim towers require the adoption of specific measures to counter the high strengths of wind in the vertical cantilever , like including additional structures to endow greater rigidity to the building or diverse types of tuned mass ...