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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 ...
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. The company patented such items as the sliding combination square, bench vises, and a
A scriber is a hand tool used in metal work to mark lines on workpieces, prior to machining. The process of using a scriber is called scribing and is just part of the process of marking out . It is used instead of pencils or ink lines, because the latter are hard to see, easily erased, and imprecise due to their wide mark; scribe lines are thin ...
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.
[5] [6] Centre squares are also manufactured to be used as a head for a combination square. [7] Combination square, or sliding square A combination square features a ruler (the blade) which can be slid and adjusted within a head (the stock). The head usually has one face at 90° to the ruler, and another face at 45° to the ruler.
A sliding T bevel, also known as a bevel gauge or false square [1] is an adjustable gauge for setting and transferring angles. Different from the square , which is fixed and can only set a 90° angle , the sliding T bevel can set any angle and transfer it on another piece.