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Combination square
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== History == 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.{{efn|Sources differ on the exact year he invented the tool, but the US patent was filed and granted in 1879.|name=|group=note}}<ref>{{Cite web|title=US Patent: 215,024 - Try Square|url=http://www.datamp.org/patents/displayPatent.php?pn=215024&id=17915|access-date=2020-10-24|website=Directory of American Tool and Machinery Patents}}</ref> In 1880 he founded the L. S. Starrett Company in [[Athol, Massachusetts]], [[United States]]. The tool was originally designed for machinists, but over time became commonly used in other trades, such as woodworking.<ref name=":0" />
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