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"The compasses, next to the T square and triangles, are used more than any other instrument. A pencil and pen point are provided, either of which may be inserted into a socket in one leg of the instrument, for the drawing of circles in pencil or ink." — Hallock, 1905

Compasses

"The compasses, next to the T square and triangles, are used more than any other instrument. A pencil…

"The compasses, next to the T square and triangles, are used more than any other instrument. A pencil and pen point are provided, either of which may be inserted into a socket in one leg of the instrument, for the drawing of circles in pencil or ink." — Hallock, 1905

Compasses

"The compasses, next to the T square and triangles, are used more than any other instrument. A pencil…

"The compasses, next to the T square and triangles, are used more than any other instrument. A pencil and pen point are provided, either of which may be inserted into a socket in one leg of the instrument, for the drawing of circles in pencil or ink." — Hallock, 1905

Compasses

"The compasses, next to the T square and triangles, are used more than any other instrument. A pencil…

"The compasses, next to the T square and triangles, are used more than any other instrument. A pencil and pen point are provided, either of which may be inserted into a socket in one leg of the instrument, for the drawing of circles in pencil or ink." — Hallock, 1905

Compasses

"The compasses, next to the T square and triangles, are used more than any other instrument. A pencil…

"The compasses, next to the T square and triangles, are used more than any other instrument. A pencil and pen point are provided, either of which may be inserted into a socket in one leg of the instrument, for the drawing of circles in pencil or ink." — Hallock, 1905

Compasses

"The compasses, next to the T square and triangles, are used more than any other instrument. A pencil…

"The compasses, next to the T square and triangles, are used more than any other instrument. A pencil and pen point are provided, either of which may be inserted into a socket in one leg of the instrument, for the drawing of circles in pencil or ink." — Hallock, 1905

Compasses

"The compasses, next to the T square and triangles, are used more than any other instrument. A pencil…

A T-square is a technical drawing instrument, primarily a guide for drawing horizontal lines on a drafting table. It is used by draftsmen. It is also used to guide the triangle that draws the vertical lines.

Architects Drafting Square

A T-square is a technical drawing instrument, primarily a guide for drawing horizontal lines on a drafting…

"Draw three-inch square and one-inch square. From the corners of inner square draw lines to outer square at 15 degrees and 75 degrees, with the two triangles in combination. Mark points with spacers 3/16" inside of each line of this outside cross, and complete figure with triangles in combination." —French, 1911

Drawing Maltese Cross using T-square, Spacers, and Triangles

"Draw three-inch square and one-inch square. From the corners of inner square draw lines to outer square…

When drawing vertical lines, the blade of the T-square is held with the thumb while the fingers adjusting the triangle.

Drawing Vertical Lines Using a T-square and a Triangle

When drawing vertical lines, the blade of the T-square is held with the thumb while the fingers adjusting…

A problem exercise to construct a star overlapping square using a triangle and T square. The image is drawn by dividing the paper with dashed lines using T square. Using the 45 degree triangle, draw diagonal lines to create the star and the star.

Constructing 4 Point Star Overlapping Box Pattern using T Square and Triangle

A problem exercise to construct a star overlapping square using a triangle and T square. The image is…

The construction of a star with square overlapping each other using a triangle and T square. This image is drawn by dividing the paper with dashed lines using T square. Using the 45 degree triangle, draw diagonal lines to create the star and the star.

Constructing Star and Box Overlap Pattern using T Square and Triangle

The construction of a star with square overlapping each other using a triangle and T square. This image…

A diagonal line pattern drawing exercise in for T square and triangle. The image is constructed by dividing the paper into squares with the T square, and the diagonal lines are drawn using a 45 degree triangle.

Drawing Exercise for Drawing Diagonal Line Pattern using T Square and Triangle

A diagonal line pattern drawing exercise in for T square and triangle. The image is constructed by dividing…

A person using a T square to draw straight lines.

T Square

A person using a T square to draw straight lines.

A person using a T square to draw triangles.

T Square

A person using a T square to draw triangles.

A T-square is used to aid drawing straight and parallel lines. It consist of a thin straightedge, the blade, and a head fastened at right angles.

T-square

A T-square is used to aid drawing straight and parallel lines. It consist of a thin straightedge, the…

T-squares is used on the left side of the board for righted handed people, and right side of the board for the left handed. One of the technique to adjust the T-square is to hold it with the fingers on the blade and the thumb on the board.

T-square Holding Position Using Fingers on Blade

T-squares is used on the left side of the board for righted handed people, and right side of the board…

An adjustable T-square to create straight lines at different angles with a ruler attached to the head.

Adjustable Head T-square with Ruler

An adjustable T-square to create straight lines at different angles with a ruler attached to the head.

An adjustable T-square to create straight lines at different angles.

Adjustable Head T-square

An adjustable T-square to create straight lines at different angles.

An English T-square for drawing straight lines. The narrowing of the bottom blade makes the T-square look as if it is not perpendicular.

English T-square

An English T-square for drawing straight lines. The narrowing of the bottom blade makes the T-square…

A long fixed head T-square for drawing straight lines. The head shape of the T-square allows for drawing a long square.

Long Fixed Head T-square

A long fixed head T-square for drawing straight lines. The head shape of the T-square allows for drawing…

A regular fixed head T-square for drawing straight lines. The blade must be perfectly straight in order to draw accurate lines.

Regular Fixed Head T-square

A regular fixed head T-square for drawing straight lines. The blade must be perfectly straight in order…

To test the straightness of the edge two T-squares may be placed together.

Testing The Edge of T-squares

To test the straightness of the edge two T-squares may be placed together.