Layout Tools Prepared by Dr. Dale Carpentier Monroe Area High School Modified by Georgia Agriculture Education Curriculum Office June 2007

Layout Tools and Procedures OBJECTIVES: As a result of this lesson, students will be able to accomplish the following objectives with 70% accuracy. 1.Identify and select appropriate tools for layout procedures in woodworking. 2.Use layout tools correctly and accurately when given a woodworking problem. 3.Read measurements within a 1/16". 4.Make a pattern using layout tools. Essential Question: What are the common layout tools used in the Agriculture Mechanics lab?

Steel Rule ► Made from steel or aluminum. ► 12 to 36 inches long. ► Used for  Measuring  Divisions  Bi-secting and Tri-secting

Tape Measures ► Used for  Measuring  Divisions

Try Square ► Three purposes  Layout lines across grain of wood.  Test edge or end for squareness.  Test work for uniform width or thickness. This is not a hammer!

Framing or Carpenter Square ► Uses  Measuring.  Divisions.  Tables.  Layout lines.  Testing for squareness.  Laying out rafters and stair steps.

Combination Square ► Used for  Measuring  Measuring and marking 90 and 45 degree angles.  Marking gage.  Level.

Speed Square ► Layout lines across grain of wood. ► Measuring ► Laying out rafter angles. ► Laying out angles.

Dry Wall Square ► Used to cut sheet rock or dry wall to size.

Sliding T-Bevel Square ► Main Use  Transferring angles to radial arm saw, compound miter saw, other tools, or from one board to another.

Folding Rule or Zig Zag Rule ► Use for  Measuring  Can be used to measure spans over head.  Not the most accurate tool.

Level ► Use to insure straightness. ► Can be used to check for vertical. ► Can be used as a straight edge.

Chalk Line ► Used to mark temporary lines on walls, ceilings, or boards.

Scratch Awl ► Use for marking wood or metal.

Checking for Square ► 3 – 4 – 5 Triangle  Measure 3 feet on one side and 4 feet on the other side. The hypotenuse should be 5 feet. If not, move the two sides until it is.  Forms a 30, 60, 90 right triangle.  Can use multiples, such as ► Measure the diagonals  If the two sides are equal and the two ends are equal, the diagonal measurements should be equal. If not, push the corners in or out until they are equal.

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