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It operates on the principle of establishing a visual level relationship between two or more points, for which an inbuilt optical telescope and a highly accurate bubble level are used to achieve the necessary accuracy. Traditionally the instrument was completely adjusted manually to ensure a level line of sight, but modern automatic versions ...
Calculation from this value will eventually give the height h, from the eye-line of the observer to the top of the object whose height is to be determined. Similarly as in step 2 of the illustration, a sighting is taken on the base of the object whose height is to be determined, and the reading on the horizontal scale, d', recorded.
A height finder radar is a type of 2-dimensional radar that measures altitude of a target. The operator slews the antenna toward a desired bearing , identifies a target echo at a desired range on the range height indicator display, then bisects the target with a cursor that is scaled to indicate the approximate altitude of the target. [ 7 ]
A height gauge is a measuring device used for determining the height of objects, and for marking of items to be worked on. [1] These measuring tools are used in metalworking or metrology to either set or measure vertical distances; [citation needed] the pointer is sharpened to allow it to act as a scriber and assist in marking out work pieces. [1]
For example, human body height is to be the length of eight heads, with an additional one-quarter head for neck length. Leg length is to be four head lengths. [1] Forensic estimation of stature is part of the identification process necessary when dismembered body parts are found. It is also possible to estimate the stature from bones. [2]
Photo interpretation at the U.S. National Photographic Interpretation Center during the Cuban Missile Crisis.. Aerial photographic and satellite image interpretation, or just image interpretation when in context, is the act of examining photographic images, particularly airborne and spaceborne, to identify objects and judging their significance. [1]
A stadiometer is a piece of medical equipment used for measuring human height. It is usually constructed out of a ruler and a sliding horizontal headpiece which is adjusted to rest on the top of the head. [1] Stadiometers are used in routine medical examinations and also clinical tests and experiments.
Original 1940s Taylor-Hobson Talysurf surface profile measuring machine. Optical methods [1] [2] include interferometry based methods such as digital holographic microscopy, vertical scanning interferometry/white light interferometry, phase shifting interferometry, and differential interference contrast microscopy (Nomarski microscopy); focus detection methods such as intensity detection ...