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 square heads available as well. Combination squares are often used for measuring angles and industrial things properly. They can also be applied to various tasks to determine flatness, divine spherical centers and even gauge depths.

Length: 12.13"

Construction: Steel

Packaging Type: Carded Pack

Stainless steel ruler with SAE and metric graduations

Heavy duty die-cast steel heads

Copper-plated aluminum adjustment knobs

Smooth precision-milled channel

Weighted durability and balance

Includes

1 pc. square head (90 degree and 45 degree) with level and detachable scribe

1 pc. stainless steel ruler

1 pc. center head

1 pc. adjustable protractor head