The Mechanical Drawing ClipArt gallery offers 110 illustrations of drafting techniques and practices.

A section of a suction pump. If the piston in the pump were to be lowered, the water level would also lower, and the water would no longer leave pipe A.

Suction Pump

A section of a suction pump. If the piston in the pump were to be lowered, the water level would also…

A large scale riveting illustration showing the length of the rivets for Osborn symbol for riveting.

Large View of Riveting for Drawing

A large scale riveting illustration showing the length of the rivets for Osborn symbol for riveting.

A side view of Osborn, or standard, symbol for riveting.

Side View of Standard Symbols for Shop Riveting

A side view of Osborn, or standard, symbol for riveting.

The standard standard symbol for field riveting, or Osborn symbol for field riveting.

Side View of Standard Symbols for Field Riveting

The standard standard symbol for field riveting, or Osborn symbol for field riveting.

A conventional standard symbol for shop riveting known as Osborn symbol.

Standard Symbols for Shop Riveting

A conventional standard symbol for shop riveting known as Osborn symbol.

A conventional break symbol for a round section to use as a shortcut in shortening the length of the bar.

Conventional Breaks Symbols of Round Section Cylinder

A conventional break symbol for a round section to use as a shortcut in shortening the length of the…

For drawing straight lines and curves that are not arcs of circles, the ruling pen is used. The distance between the pen points, which regulates the width of line to be drawn, is adjusted by the thumb screw, and the blades are given a slight curvature so that there will be a cavity for ink when the points are close together.

Ruling Pen

For drawing straight lines and curves that are not arcs of circles, the ruling pen is used. The distance…

"For drawing ink lines other than arcs of circles, the ruling pen is used. It should be held as nearly perpendicular to the board as possible, bearing lightly against the T square or triangle, along the edge of which the line is drawn. After a little practice, this position will become natural, and no difficulty will be experienced." — Hallock, 1905

Ruling Pen

"For drawing ink lines other than arcs of circles, the ruling pen is used. It should be held as nearly…

"For drawing ink lines other than arcs of circles, the ruling pen is used. It should be held as nearly perpendicular to the board as possible, bearing lightly against the T square or triangle, along the edge of which the line is drawn. After a little practice, this position will become natural, and no difficulty will be experienced." — Hallock, 1905

Ruling Pen

"For drawing ink lines other than arcs of circles, the ruling pen is used. It should be held as nearly…

This drawing depicts the use of a sail where perpendicularly placed so that opposing wind provides the necessary thrust to move the vessel.

Lift Sail

This drawing depicts the use of a sail where perpendicularly placed so that opposing wind provides the…

Illustration of a common representation for square thread screw. The screw is drawn in two dimensions and used in drafting plans and mechanical drawing.

Square Thread Screw Mechanical Drawing Representation

Illustration of a common representation for square thread screw. The screw is drawn in two dimensions…

A close up of a square thread on a screw. This representation shows the correct an accurate three dimensional view of the screw.

Square Thread Screw

A close up of a square thread on a screw. This representation shows the correct an accurate three dimensional…

This seeding machine was used to facilitate the process of planting seeds into the soil.

Machine, Seeding

This seeding machine was used to facilitate the process of planting seeds into the soil.

"A circle may be shaded by shifting the center on a 45-degree line toward the lower right hand corner... by keeping the needle in the center after drawing the circle and springing the compass out and gradually pressing with the middle finger in the position as shown." —French, 1911

Shading a Circle Using Compass

"A circle may be shaded by shifting the center on a 45-degree line toward the lower right hand corner...…

"A conical surface may be shaded by driving a fine needle at the apex and swinging a triangle about it, as in (A). To avoid a blot at the apex of a complete cone the needle may be driven on the extension of the side as in (B), or it may be shaded by parallel line as in (C)." —French, 1911

Different Cone Shading

"A conical surface may be shaded by driving a fine needle at the apex and swinging a triangle about…

An application of shading double curved surface of a lever.

Lever Shading

An application of shading double curved surface of a lever.

Line shading of a pipe using double curved surface technique.

Piper Shading

Line shading of a pipe using double curved surface technique.

An application of shading using double curved surfaces of a screw in the socket.

Screw Shading

An application of shading using double curved surfaces of a screw in the socket.

A line shading for spheres by guessing how the surface would look when shaded.

Sphere Shading

A line shading for spheres by guessing how the surface would look when shaded.

A thumb screw shading illustrating a double curved surface line shading technique.

Thumb Screw Shading

A thumb screw shading illustrating a double curved surface line shading technique.

Shading wheel using lines by estimating how the light hit the surface.

Wheel Shading

Shading wheel using lines by estimating how the light hit the surface.

An illustration of an isometric sketch to show a three dimensional object. The sketch is useful in elevation drawing, plans, and laying out curve diagrams.

Isometric Sketch

An illustration of an isometric sketch to show a three dimensional object. The sketch is useful in elevation…

A problem exercise to creating a star using series of triangles and squares. The image is divided by the dotted line to scale images to appropriate size.

Star Construction Using Triangles and Squares

A problem exercise to creating a star using series of triangles and squares. The image is divided by…

"Stair details and the like may be shown with sufficient clearness to the scales of 3/4" or 1". Mouldings and other mill work details are generally made full size. The turned or revolved section is often of use is showing moulding sections in position." —French, 1911

Stair Detail

"Stair details and the like may be shown with sufficient clearness to the scales of 3/4" or 1". Mouldings…

A series of illustration with conventional breaks and other symbols. The break in the bar is used as a shortcut in shortening the length of the bar.

Conventional Breaks and Other Symbols

A series of illustration with conventional breaks and other symbols. The break in the bar is used as…

A series of general electrical symbols commonly used in mechanical drawing.

Electrical Symbols

A series of general electrical symbols commonly used in mechanical drawing.

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.

"Use the T square and 45 degree triangle to divide the square as indicated, the size of the small squares being ½". This is an excellent test of precision in measurement and lining. Care must be observed in the inking of this figure to allow each line to dry before inking the next one." —Anthony, 1904

Drawing Diagonal Lines with T Squares and Triangle

"Use the T square and 45 degree triangle to divide the square as indicated, the size of the small squares…

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…

This design of an ironing table allows for unique placement on a door or window.

Ironing Table

This design of an ironing table allows for unique placement on a door or window.

Draftsman's method to draw a tangent, AB, to a circle

Tangent To A Circle

Draftsman's method to draw a tangent, AB, to a circle

Draftsman's method to draw a line tangent to two given circles

Tangent To Two Circles

Draftsman's method to draw a line tangent to two given circles

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.

Use a drawing board and T-square to test the accuracy of the 90 degree angle.

Testing Triangles

Use a drawing board and T-square to test the accuracy of the 90 degree angle.

The illustration detailing of a screw thread. Threads are created by drawing a cylindrical shape at a constant diameter. The pitch, length between the threads, is drawn along the cylinder at an angle.

Drawing Screw Thread

The illustration detailing of a screw thread. Threads are created by drawing a cylindrical shape at…

An illustration of even line shading using ruled lines. Lined shading is commonly used in patents.

Even Line Shading Tint

An illustration of even line shading using ruled lines. Lined shading is commonly used in patents.

An illustration of creating a line shading from dark to light. The lines are gradually become thin. The pen is slightly changed throughout the drawing.

Line Shading Dark to Light Tint

An illustration of creating a line shading from dark to light. The lines are gradually become thin.…

An exercise in creating a line shading, where the line is becoming thicker. The pen is slightly changed throughout the drawing.

Line Shading Light to Dark Tint

An exercise in creating a line shading, where the line is becoming thicker. The pen is slightly changed…

Triangles are made of various substances such as wood, rubber, celluloid, and steel.

30-60 Degree Triangle

Triangles are made of various substances such as wood, rubber, celluloid, and steel.

Triangles are made of various substances such as wood, rubber, celluloid, and steel.

45 Degree Triangle

Triangles are made of various substances such as wood, rubber, celluloid, and steel.

15 degrees with the horizontal or 75 degrees with the vertical.

Triangle Set Up for 15 Degrees

15 degrees with the horizontal or 75 degrees with the vertical.

30 degrees with the horizontal or 60 degrees with the vertical.

Triangle Set Up for 30 Degrees

30 degrees with the horizontal or 60 degrees with the vertical.

45 degrees with the horizontal or 45 degrees with the vertical.

Triangle Set Up for 45 Degrees

45 degrees with the horizontal or 45 degrees with the vertical.

60 degrees with the horizontal or 30 degrees with the vertical.

Triangle Set Up for 60 Degrees

60 degrees with the horizontal or 30 degrees with the vertical.

75 degrees with the horizontal or 15 degrees with the vertical.

Triangle Set Up for 75 Degrees

75 degrees with the horizontal or 15 degrees with the vertical.

"The intersection of two cylinders might represent a dome on a boiler. If the top view of cylinder A is divided into a number of equal parts the points will represent the top views of elements."—French, 1911

Intersection of Two Cylinders

"The intersection of two cylinders might represent a dome on a boiler. If the top view of cylinder A…

Vertical lines are drawn by using a triangle held against the T-square.

Drawing a Vertical Line

Vertical lines are drawn by using a triangle held against the T-square.

Vertical line is drawn downward with the pencil held with freedom, not close to the point.

Sketching Vertical Line

Vertical line is drawn downward with the pencil held with freedom, not close to the point.