A combination square includes a ruler with attachments that slide off and on. You can interchange attachments and tighten them down to use the square as a template for measurements and angle markings. For example, use it to mark right angles and check the accuracy of a saw cut.
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2. 90 DEGREE ANGLE EDGE: TIP 2
Mark continuous lines around 4 sides of a board or post,
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3. 90 DEGREE ANGLE EDGE: TIP 3
Use it as a depth gauge for measuring the depth of a groove.
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4. 90 DEGREE ANGLE EDGE: TIP 4
This edge is a handy way to set the depth of a router bit. It’s also great for recalibrating a table saw or miter saw blade.
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5. 90 DEGREE ANGLE EDGE: TIP 5
You can even scribe a line parallel to the edge of a board.
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6. 45 DEGREE ANGLE EDGE
Flip the 90 degree angle edge around to set it for 45 degree angle markings.
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7. THE PROTRACTOR: TIP 1
Use this for marking specific angles. After setting the angle, tighten the attachment down and you have a template for repeating the same mark or cut on several pieces. This makes it good for decking or molding projects.
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8. THE PROTRACTOR: TIP 2
This attachment is useful for finding the center of a dowel or rod.
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9. THE PROTRACTOR: TIP 3
Find the center of large circular objects by marking two crossing lines. The center will be at their intersection.
A combination square has interchangeable attachments that slide into place along the rule. They’ll help you check your accuracy on a number of tasks and projects. Here are a few tips for using one: 9 Steps