Combination square
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A combination square is a multi-purpose measuring and marking tool used in metalworking, woodworking, and stonemasonry. It is composed of a rule and one or more interchangeable heads that can be attac
A Starrett combination square with a standard head
A combination set with the rule (top), a standard head (left), protractor head (centre), and a centre finder head (right).
L. S. Starrett Company
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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. It claims to produce 5,000 variations of precisi
Combination square
…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. In 1880 he founded the L. S. Starrett Company in Athol, Massachusetts, United States. The tool was originally designed for…
Starrett Tools in Athol, Massachusetts
The Starrett plant in 1905
Starrett dividers