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Combination Square Sets and Components

Invented by Laroy S. Starrett in 1883, the combination square has proved to be indispensable in woodworking, masonry and metalwork over the decades. Combination square sets include a ruler and one or more interchangeable heads that can be affixed to it. 12-inch combination squares are common, and adjustable squares are available as well. Combination squares are often used for measuring angles, but they can also determine flatness, divine spherical centers and even gauge depths. While you’re at it, browse Bevels, stair gauges, squares and angle, pitch and slope locators.

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