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2. Filar micrometer - Wikipedia

   en.wikipedia.org/wiki/Filar_micrometer

   A filar micrometer is a specialized eyepiece used in astronomical telescopes for astrometry measurements, in microscopes for specimen measurements, and in alignment and surveying telescopes for measuring angles and distances on nearby objects. "Filar" derives from the Latin filum ("thread"). It refers to the fine threads or wires used in the ...

3. List of astronomical instruments - Wikipedia

   en.wikipedia.org/wiki/List_of_astronomical...

   An astronomical instrument is a device for observing, measuring, or recording astronomical data. [citation needed] They are used in the scientific field of astronomy, a natural science that studies celestial objects and the phenomena that occur in the cosmos, with the object of explaining their origin and evolution over time. Many are also used ...

4. Optical microscope - Wikipedia

   en.wikipedia.org/wiki/Optical_microscope

   Measuring microscopes are used for precision measurement. There are two basic types. One has a reticle graduated to allow measuring distances in the focal plane. [32] The other (and older) type has simple crosshairs and a micrometer mechanism for moving the subject relative to the microscope. [33]

5. List of measuring instruments - Wikipedia

   en.wikipedia.org/wiki/List_of_measuring_instruments

   A measuring cup, a common instrument used to measure volume. Buoyant weight (solids) Eudiometer, pneumatic trough (gases) Flow measurement devices (liquids) Graduated cylinder (liquids) Measuring cup (grained solids, liquids) Overflow trough (solids) Pipette (liquids) If the mass density of a solid is known, weighing allows to calculate the volume.

6. Nikon Instruments - Wikipedia

   en.wikipedia.org/wiki/Nikon_Instruments

   Nikon launched the Optiphot and Labophot microscopes in the 1970's and established the CF Optical system. In the 1980's, they released 80 new products, including the inverted Diaphot microscope, which was used in IVF techniques. The introduction of the Eclipse range of infinity optics in the 1990's was a departure from traditional microscope ...

7. Zygo Corporation - Wikipedia

   en.wikipedia.org/wiki/Zygo_Corporation

   Zygo Corporation, or simply Zygo, is a manufacturer headquartered at Middlefield, Connecticut, that specializes in optical systems and equipment.Their metrology product lines include 3D measuring microscopes using coherence scanning interferometry, laser Fizeau interferometers for testing optical components, laser displacement interferometers, and heterodyne optical encoders for stage position ...