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[6] [7] As the name "Magnum" implies, it was a fairly large device at 4.5 inches in diameter—about 1.5 inches more than Fowler's average non-Magnum-series calculators. [8] The large design meant that much larger calculations could be performed on it, "to four, and sometimes five, significant figures," according to the instruction manual. [6]
Star Fleet - Ships of the Star Fleet Technical Manual: Neale Davidson 2003 .pdf 36 8.5" x 11" Star Fleet - Starship Recognition Manual - Ships of the Baton Rouge Era: Neale Davidson 2005 .pdf 36 8.5" x 11" Star Fleet - Starship Recognition Manual - Volume One - Ships of Support 2268: Neale Davidson 2005 .pdf 36 8.5" x 11"
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 ...
On a manual milling machine, the micrometer adjustment nut limits the depth to which the cutting tool may plunge into the workpiece. The nut is located on a threaded rod on the mill head. The machine operator moves it up or down by rotating it clockwise (to move it down) or counter-clockwise (to move it up).
The calculator described above was called "Model No. 1" . [6] Model 2 had scales on the inner cylinder for calculating logs and sines.The "Fuller-Bakewell" model 3 had two scales of angles printed on the inner cylinder to calculate cosine² and sine ⋅ cosine [note 1] for use by engineers and surveyors for tacheometry calculations.
Early Lufkin logo. The company was founded by Edward Taylor Lufkin, an American Civil War veteran of the Sixtieth Regiment Ohio Volunteer Infantry [1] in Cleveland, Ohio, 1869 [2] and was originally named E.T. Lufkin Board and Log Rule Manufacturing Company.
The precursor to the filar micrometer was the micrometer eyepiece, invented by William Gascoigne. Earlier measures of angular distances relied on inserting into the eyepiece a thin metal sheet cut in the shape of a narrow, isosceles triangle. The sheet was pushed into the eyepiece until the two adjacent edges of the metal sheet simultaneously ...
The spark micrometer, also known as a Riess micrometer [1] was a device used by 19th century physicists to measure potential in an electric circuit. It was developed principally by German physicist Peter Riess .