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2. Micrometer (device) - Wikipedia

   en.wikipedia.org/wiki/Micrometer_(device)

   Tube micrometers have a cylindrical anvil positioned perpendicularly to a spindle and is used to measure the thickness of tubes. Micrometer stops are micrometer heads that are mounted on the table of a manual milling machine, bedways of a lathe, or other machine tool, in place of simple stops. They help the operator to position the table or ...

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   Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

4. Filar micrometer - Wikipedia

   en.wikipedia.org/wiki/Filar_micrometer

   Filar micrometer. A typical filar micrometer consists of a reticle that has two fine parallel wires or threads that can be moved by the observer using a micrometer screw mechanism. The wires are placed in the focal image plane of the eyepiece so they remain sharply superimposed over the object under observation, while the micrometer motion ...

5. Micrometre - Wikipedia

   en.wikipedia.org/wiki/Micrometre

   The micrometre (Commonwealth English as used by the International Bureau of Weights and Measures; [1] SI symbol: μm) or micrometer (American English), also commonly known by the non-SI term micron, [2] is a unit of length in the International System of Units (SI) equalling 1 × 10 −6 metre (SI standard prefix "micro-" = 10 −6); that is, one millionth of a metre (or one thousandth of a ...

6. Field electron emission - Wikipedia

   en.wikipedia.org/wiki/Field_electron_emission

   The so-called standard Fowler–Nordheim-type equation, originally developed by Murphy and Good, [72] and much used in past literature, is obtained by putting λ Z → t F −2, P F → 1, → v F, where v F is v(f), where f is the value of f h obtained by putting h = φ, and t F is a related parameter (of value close to unity).

7. Fowler Calculators - Wikipedia

   en.wikipedia.org/wiki/Fowler_Calculators

   Fowler Calculators Ltd was a manufacturer of slide rules and other scientific and mathematical instruments, based in Manchester, England and founded by William Henry Fowler (ca. 1854–1932). [ 1 ] [ 2 ] [ 3 ]