WOODWORKING: LAYOUT & MEASURING

Historical Measurement Measurement

started with items common to man such as a hand length, an arms length, the length of a foot or many other common items. These proved to be inadequate.

Steel Rule Is a metal ruler Used for accurate

measurements Can be used as

guides for laying out lines

Rigid steel rules can be used when cutting straight lines.

Try Square A straight edge ruler

and a beam or stock piece that are joined together at a 90˚ angle

Used for• layout lines perpendicular

to an edge/side• Check that a board is

square• Check a board’s flatness

If a try square is dropped it may become inaccurate (not square.

Combination Square Consists of:

• Blade – steel rule• Square head• Center head• Protractor head

Used like a try square Layout angles Find the center of

round stock (center head)

Measure the depth of a hole

Carpenters Square Used to

• measure boards• Testing corners• Laying out various

angles 2 measuring blades

are set at 90˚ This tool can be

inaccurate if dropped…but can be reset.

Sliding T-Bevel The blade on the T-Bevel

is movable It can be set at any

angle between 0˚ and 180˚

The locking screw secures the blade in place.

You can use various other tools to set the angle and then test your pieces to see if the angle matches.

Trammel Points Accurately measure

and mark long distances

Transfer arcs and circles

Compass Tools used to draw

arcs and circles One point stays

stationary (point), while the other end draws the arc (pencil)

French Curve Used to smooth

arcs or making the transition from an arc to a straight line

Layout curves and other designs

Measuring Tape A flexible form of a

ruler (metal strip) Self-retracting

coiled measuring tool

Tip moves slightly to allow for accurate inside or outside measurements

Chalk Line Allows you to draw

a straight line over a long distance.

String and chalk is contained in the body of the tool

You pull the line tight and snap it. The result is a chalk line.

Your Task… Find an uncommon

tool used in the woodworking shop.

Create 2 posters for the tool:1. Create a fake

name and use for the tool

2. Indicate the real name and use for the tool.