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The Starrett corporation has continuously expanded through its history through the patenting of products and takeovers of other manufacturers. In 1878 Laroy S. Starrett invented and patented the first combination square, [4] and in 1880 he founded the L.S. Starrett Company in Athol, Massachusetts, in order to produce it and other precision ...
Diagram of a micrometer showing a measurement of 7.145 mm ± 0.005 mm A micrometer is composed of: Anvil : The shiny part that the spindle moves toward, and that the sample rests against.
Though some earlier 19th century tools were called combination squares, the modern combination square was invented in the late 1870s by American inventor Laroy S. Starrett, and patented in 1879. [note 1] [8] In 1880 he founded the L. S. Starrett Company in Athol, Massachusetts, United States. The tool was originally designed for machinists, but ...
An exploded-view drawing is a diagram, picture, schematic or technical drawing of an object, that shows the relationship or order of assembly of various parts. [1]It shows the components of an object slightly separated by distance, or suspended in surrounding space in the case of a three-dimensional exploded diagram.
Thompson–Starrett Co. was an American construction contracting and engineering firm based in New York City that operated from 1899 until 1968. During the company's first 30 years, it was a pioneer in the construction of skyscrapers and one of the first companies to develop a national practice involving large-scale construction projects.
A 250 mm x 250 mm surface plate. A surface plate is a solid, flat plate used as the main horizontal reference plane for precision inspection, marking out (layout), and tooling setup. [1]
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The calipers in the diagram show a primary reading on the metric scale of about 2.475 cm (2.4 cm read from the main scale plus about 0.075 cm from the vernier scale). Calipers often have a "zero point error": meaning that the calipers do not read 0.000 cm when the jaws are closed.