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Finger is also the name of a longer unit of length, used historically in cloth measurement, to mean one eighth of a yard or 4 1 / 2 inches. [8] [10] (114.3 mm) Again, which finger and whose finger, is not defined. These units have no legal status but remain in use for 'rough and ready' comparisons.
Hand - breadth of a human hand; Klafter - German measure of outstretched hands; League - the distance a person can walk in an hour (by one definition) Orgyia - Ancient Greek fathom; Parasang - the distance an infantryman could march in a predefined period of time; Pygmē - distance from elbow to base of fingers; Sazhen - Russian fathom
Hand strength measurements are of interest to study pathology of the hand that involves loss of muscle strength. Examples of these pathologies are carpal tunnel syndrome , nerve injury , tendon injuries of the hand, and neuromuscular disorders.
The 2D:4D ratio is calculated by dividing the length of the index finger by the length of the ring finger of the same hand. Other digit ratios are also calculated similarly in the same hand. The digit length is typically measured on the palmar (ventral, "palm-side") hand, from the midpoint of the bottom crease to the tip of the finger. [8]
The relative length of the digit varies during motion of the IP joints. The length of the palmar aspect decreases during flexion while the dorsal aspect increases by about 24 mm. The useful range of motion of the PIP joint is 30–70°, increasing from the index finger to the little finger.
Hand geometry is a biometric that identifies users from the shape of their hands. Hand geometry readers measure a user's palm and fingers along many dimensions including length, width, deviation, and angle and compare those measurements to measurements stored in a file.
Analog and traditional devices to measure range of motion in the joints of the body include the goniometer and inclinometer which use a stationary arm, protractor, fulcrum, and movement arm to measure angle from axis of the joint. As measurement results will vary by the degree of resistance, two levels of range of motion results are recorded in ...
The digit or finger is an ancient and obsolete non-SI unit of measurement of length. It was originally based on the breadth of a human finger. [1] It was a fundamental unit of length in the Ancient Egyptian, Mesopotamian, Hebrew, Ancient Greek and Roman systems of measurement. In astronomy a digit is one twelfth of the diameter of the sun or ...