Definition of Micrometer screw. Meaning of Micrometer screw. Synonyms of Micrometer screw

Here you will find one or more explanations in English for the word Micrometer screw. Also in the bottom left of the page several parts of wikipedia pages related to the word Micrometer screw and, of course, Micrometer screw synonyms and on the right images related to the word Micrometer screw.

Definition of Micrometer screw

Micrometer screw
Micrometer Mi*crom"e*ter, n. [Micro- + -meter: cf. F. microm[`e]tre.] An instrument, used with a telescope or microscope, for measuring minute distances, or the apparent diameters of objects which subtend minute angles. The measurement given directly is that of the image of the object formed at the focus of the object glass. Circular, or Ring, micrometer, a metallic ring fixed in the focus of the object glass of a telescope, and used to determine differences of right ascension and declination between stars by observations of the times at which the stars cross the inner or outer periphery of the ring. Double image micrometer, a micrometer in which two images of an object are formed in the field, usually by the two halves of a bisected lens which are movable along their line of section by a screw, and distances are determined by the number of screw revolutions necessary to bring the points to be measured into optical coincidence. When the two images are formed by a bisected object glass, it is called a divided-object-glass micrometer, and when the instrument is large and equatorially mounted, it is known as a heliometer. Double refraction micrometer, a species of double image micrometer, in which the two images are formed by the double refraction of rock crystal. Filar, or Bifilar, micrometer. See under Bifilar. Micrometer caliper or gauge (Mech.), a caliper or gauge with a micrometer screw, for measuring dimensions with great accuracy. Micrometer head, the head of a micrometer screw. Micrometer microscope, a compound microscope combined with a filar micrometer, used chiefly for reading and subdividing the divisions of large astronomical and geodetical instruments. Micrometer screw, a screw with a graduated head used in some forms of micrometers. Position micrometer. See under Position. Scale, or Linear, micrometer, a minute and very delicately graduated scale of equal parts used in the field of a telescope or microscope, for measuring distances by direct comparison.

Meaning of Micrometer screw from wikipedia

- A micrometer (/maɪˈkrɒmɪtər/ my-KROM-i-tər), sometimes known as a micrometer **** gauge, is a device incorporating a calibrated **** widely used for...
- A **** is a type of fastener, in some ways similar to a bolt (see Differentiation between bolt and **** below), typically made of metal, and characterized...
- A differential **** is a mechanism used for making small, precise adjustments to the spacing between two objects (such as in focusing a microscope, moving...
- A **** thread, often shortened to thread, is a helical structure used to convert between rotational and linear movement or force. A **** thread is a...
- parallel wires or threads that can be moved by the observer using a micrometer **** mechanism. The wires are placed in the focal image plane of the eyepiece...
- object lens in half, with one half fixed and the other attached to the micrometer **** and slid along the cut diameter. To measure the diameter of the sun...
- A **** is a mechanism that converts rotational motion to linear motion, and a torque (rotational force) to a linear force. It is one of the six cl****ical...
- divided in half millimeters. Fine adjustments are made by means of a micrometer **** for taking accurate reading. Both vernier reading to 0.01mm or 0.02mm...
- slides along the axis of the tube. micrometer, sometimes known as a "micrometer **** gauge" a device incorporating a calibrated **** used widely for precise...
- The beauty micrometer, also known as the beauty calibrator, was a device designed in the early 1930s to help in the identification of the areas of a person's...
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