### 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…

T—squares can be temporarily adjusted by putting the thumb tack in the head as illustrated. This…

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

### Development Exercise of Cylinder using Three Piece Elbow

The exercise problem of creating a three piece elbow development or rolled out image of the cylinder…

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

### Line Shading Dark to Light Tint

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

### Line Shading Light to Dark Tint

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

### Development Exercise of Triangular Pyramid

Exercise problem to develop, or rolled out, image of the triangular pyramid by creating an equal length…

### Two Cylinders with Axes Not Intersecting

"If the cylinder A were to be developed a right section as at S—S would have to be taken, whose…

### Intersection of Two Cylinders

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

### Sketching Vertical Line

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

### Mechanical Drawing Cross Hatching of Wrought Iron

A wrought iron conventional cross hatching symbol.

### Mechanical Drawing Cross Hatching of Wrought Steel

The conventional cross hatching mechanical drawing symbol for wrought steel.