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Angle Finders & Protractors

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Protractors are used to measure and mark angles. Most people think of protractors as the clear, plastic semicircular devices used in grade school geometry classes. The tools used by carpenters and draftsmen are less familiar but far more important.


In geometry classes, students learn that each angle of a square or rectangle is 90 degrees. In the real world, carpenters quickly learn that few things are ever square! Mitering a cut on expensive or heavy wood for a join that turns out not to be a perfect 90 degrees consumes time, material and money! Sears carries three different kinds of Craftsman angle finders. While squares are useful for making right angle cuts, Craftsman angle finders allow carpenters to cut perfect joins every time by measuring and marking every angle possible.


Digital angle finders feature dual built-in bubble levels and an LED display of digital angle measurements. Most digital angle finders also calculate miter angles for perfect mitering saw cuts. Not all digital angle finders have this feature, and shoppers must be sure to check for it if it is an important consideration for making the purchase.


Some contractors need to measure only one type of angle. For example, residential framers may only care about building perfect 90 degree joins as they frame a home, and a simple square is the only angle measuring tool they need. Roofing contractors find themselves in a similar situation. Roof slopes are based on only a few simple angles. For roofing contractors, simple and rugged rafter angle squares do the job perfectly. Sears carries a large selection of rafter angle squares of aluminum or polymer construction. The poly tools are brightly colored in orange, yellow, red or green, which makes them easy to spot on a worksite, and are usually less expensive than the aluminum models.