micrometer$48755$ - определение. Что такое micrometer$48755$
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  3. micrometer$48755$

Что (кто) такое micrometer$48755$ - определение

DEVICE USED TO MEASURE SIZE OF MICROSCOPIC OBJECTS
Micrometer eyepiece
  • Micrometer Eyepiece
  • Ocular micrometer

Ocular micrometer         
An ocular micrometer is a glass disk that fits in a microscope eyepiece that has a ruled scale, which is used to measure the size of magnified objects. The physical length of the marks on the scale depends on the degree of magnification.
https://en.wikipedia.org/wiki/Ocular_micrometer
Micrometer (device)         
  • Imperial unit micrometer thimble showing a reading of 0.2760 in. The main scale reads 0.275 in (exact) plus 0.0010 in (estimated) on the secondary scale (the last zero is an estimated tenth). The reading would be 0.2760 ± 0.0005 in, which includes plus/minus half the width of the smallest ruling as the error. Here it has been assumed that there is no zero point error (often untrue in practice).
  • Vernier micrometer reading 5.783 ± 0.001 mm, comprising 5.5 mm on main screw lead scale, 0.28 mm on screw rotation scale, and 0.003 mm added from vernier.
  • Micrometer thimble with a reading of <!--DO NOT CHANGE TO 5.78. IF YOU ZOOM IN YOU CAN CLEARLY SEE THE ESTIMATED TENTH IS BETTER AT 9 THAN 0. ALSO THE READING WOULD BE 5.780, NOT 5.78!-->5.779&nbsp;±&nbsp;0.005&nbsp;mm. (You must enlarge the image to be able to read the scale to its fullest precision.) The reading consists of exactly 5.5&nbsp;mm from the main scale plus an estimated 0.279&nbsp;mm from the secondary scale.<!--Note the '9' is an estimated tenth. Although it would not be unreasonable to claim a reading of 0.280 mm for the secondary scale, close inspection shows the main scale line does not quite reach 0.280 mm, making 0.279 mm the best but even 0.278 mm is not unreasonable. These two alternative readings would be expressed as 5.780 mm and 5.778 mm. Expressing the result as 5.78 mm is incorrect unless there's reason not to use the instrument's full precision to measure the object.--> Assuming no zero error, this is also the measurement.
  • 1667}}
  • Another large micrometer in use
  • Modern micrometer with a reading of <!--DO NOT CHANGE THIS TO 1.640. MAKE SURE YOU ZOOM IN TO SEE THE READING. IF YOU STILL THINK 1.640 IS CORRECT, IT MEANS YOU MISUNDERSTAND HOW TO READ A MICROMETER!-->1.639&nbsp;±&nbsp;0.005&nbsp;mm. (Note you must enlarge the image to properly read the instrument.) Assuming no zero error, this is also the measurement.
  • Large micrometer caliper, 1908
  • fractional]] [[inch]] measurements and their [[decimal]] equivalents.
  • Animation of a micrometer in use. The object being measured is in black. The measurement is 4.140&nbsp;±&nbsp;0.005&nbsp;mm.
DEVICE INCORPORATING A CALIBRATED SCREW
Micrometer screw; Micrometer screw gauge; Micrometer (measuring instrument); Vernier micrometer; Micrometre (caliper); Micrometre (calliper); Micrometre (screw gauge); Micrometre screw gauge; Micrometre screw; Vernier micrometre; Micrometre (measuring instrument)
A micrometer, sometimes known as a micrometer screw gauge, is a device incorporating a calibrated screw widely used for accurate measurement of componentsEncyclopedia Americana (1988) "Micrometer" Encyclopedia Americana 19: 500 (set) in mechanical engineering and machining as well as most mechanical trades, along with other metrological instruments such as dial, vernier, and digital calipers. Micrometers are usually, but not always, in the form of calipers (opposing ends joined by a frame).
https://en.wikipedia.org/wiki/Micrometer_(device)
micrometer         
WIKIMEDIA DISAMBIGUATION PAGE
Micrometer (disambiguation)
[m??'kr?m?t?]
¦ noun a gauge which measures small distances or thicknesses.
Derivatives
micrometry noun

Википедия

Ocular micrometer

An ocular micrometer or eyepiece micrometer is a glass disk, engraved with a ruled scale, that fits in an eyepiece of a microscope, which is used to measure the size of microscopic objects through magnification under a microscope. When the eyepiece micrometer is calibrated using a stage micrometer, the length of the divisions on the scale depends on the degree of magnification.

https://en.wikipedia.org/wiki/Ocular micrometer
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