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A combination square is a versatile hand tool used in woodworking, metalworking, and construction. It combines multiple tools into one, making it a favorite for measuring, marking, and checking precision. The main components of a combination square are a ruler (blade) and an interchangeable head that slides along the ruler.
IMPORTANT: IF YOU REMOVE THE BLADE OR THE SCRIBE, YOU MUST REATTACH IT TO THE ANVIL OR YOU WILL HAVE TO SORT SCREWS FOR AN HOUR.
Components of a Combination Square:
Components of a Combination Square:
Ruler (Blade):
A flat, straight, metal ruler marked with inches (or fractions) on one side and centimeters (or millimeters) on the other.
Square Head:
A perpendicular block attached to the ruler that can be adjusted and locked in place with a screw. This part enables precise measurements and angles.
Spirit Level:
A small bubble level embedded in the square head for checking horizontal or vertical alignment.
Scriber:
A small, pointed metal tool stored in the square head, used for marking lines on materials.
How to Use a Combination Square:
How to Use a Combination Square:
Adjust the Square Head:
Loosen the locking screw, slide the square head to the desired position on the ruler, and tighten it securely.
Align the Tool:
Place the square head against the edge of your workpiece or tool.
Mark or Measure:
Use a pencil or the built-in scriber to draw lines or make marks as needed.
Uses of a Combination Square:
Uses of a Combination Square:
Measuring Angles:
The square head ensures 90° (right angles) and 45° angles (miter angles) for layout work. Use the edge of the square head as a guide to mark these angles.
Marking and Measuring:
Place the square head at a specific position on the ruler to measure and mark consistent distances or lines parallel to the edge of a workpiece.
Checking Squareness:
Use the square head to verify that corners and edges of materials are exactly 90°, ensuring the precision of cuts and assemblies.
Finding Center Points:
By aligning the ruler diagonally across a circular object, you can use the combination square to mark intersecting lines, locating the center of the circle.
Checking Depth and Heights:
Adjust the square head to measure depths (e.g., slots or grooves) or heights (e.g., for setting up saw blades).
Leveling:
The built-in spirit level helps ensure that surfaces or components are perfectly level (horizontal) or plumb (vertical).
Drawing Parallel Lines:
Slide the square head along the edge of the material while keeping the ruler aligned, enabling accurate parallel markings.
Setting Up Tools:
The combination square can be used to set the angle or height of saw blades, drill presses, or other equipment in a workshop.
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