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2. Micrometer (device) - Wikipedia

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

   Blade micrometers have a matching set of narrow tips (blades). They allow, for example, the measuring of a narrow o-ring groove. Pitch-diameter micrometers (aka thread mics) have a matching set of thread-shaped tips for measuring the pitch diameter of screw threads. Limit mics have two anvils and two spindles, and are used like a snap gauge ...

3. 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 ...

4. Lufkin (brand) - Wikipedia

   en.wikipedia.org/wiki/Lufkin_(brand)

   Lufkin is a brand featuring primarily measurement tools such as calipers, gauges, micrometers, and measuring tapes. Lufkin is a brand of Apex Tool Group. History

5. Orders of magnitude (length) - Wikipedia

   en.wikipedia.org/wiki/Orders_of_magnitude_(length)

   1 micrometer (also called 1 micron) 1–4 μm Typical length of a bacterium [22] 4 μm Typical diameter of spider silk [23] 7 μm Typical size of a red blood cell [24] 10 −5: 10 μm: 10 μm Typical size of a fog, mist, or cloud water droplet 10 μm Width of transistors in the Intel 4004, the world's first commercial microprocessor: 12 μm

6. L. S. Starrett Company - Wikipedia

   en.wikipedia.org/wiki/L._S._Starrett_Company

   In 1890, L.S. Starrett patented a micrometer with other improvements, transforming the rough version of this tool into a modern micrometer. [5] During the same year Starrett began making and refining saw blades, and continues to be a major manufacturer as of 2015. [citation needed] In 1895 Starrett patented the divider with trammel. [6]

7. Micrometer - Wikipedia

   en.wikipedia.org/wiki/Micrometer

   Micrometer can mean: Micrometer (device), used for accurate measurements by means of a calibrated screw; Micrometre, a millionth of a metre