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The L. S. Starrett Company is an American manufacturer of tools and instruments used by machinists, tool and die makers, and the construction industry. The company was founded by businessman and inventor Laroy Sunderland Starrett in 1880.
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.
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 ...
Ready Ref Sheets was published by Judges Guild in 1977 as a 56-page book. [1] Judges Guild published a second edition in 1978. [1]In 1976, Judges Guild began releasing packages to their early subscribers in the format of loose leaf sheets in a large envelope, sometimes with a stapled booklet, starting with their Initial Package (1976) that came in a plain, unmarked envelope.
Pocket Ref is a general-purpose pocket-sized reference book composed of various tips, tables, maps, formulas, constants and conversions, compiled by Thomas J. Glover. [1] It is published by Sequoia Publishing, and is currently in its fourth edition at 864 pages in length, released in late 2010.
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] The surface plate is often used as the baseline for all measurements to a workpiece, therefore one primary surface is finished extremely flat with tolerances below 11.5 μm or 0.0115 mm per ...
The handbook was originally published in 1928 by the Chemical Rubber Company (now CRC Press) as a supplement (Mathematical Tables) to the CRC Handbook of Chemistry and Physics. Beginning with the 10th edition (1956), it was published as CRC Standard Mathematical Tables and kept this title up to the 29th edition (1991).
The need of reference tables for this thermocouple was made evident by the growing acceptance and increased usage of it. Twenty-seven thermocouples made of 20-, 30-, and 40-mil diameter elements drawn from three separate melts of the positive and negative alloys were calibrated.